C# GridView 72般絕技

GridView無代碼分頁排序
GridView選中,編輯,取消,刪除
GridView正反雙向排序
GridView和下拉菜單DropDownList結合
GridView和CheckBox結合
鼠標移到GridView某一行時改變該行的背景色方法一
鼠標移到GridView某一行時改變該行的背景色方法二
GridView實現刪除時彈出確認對話框
GridView實現自動編號
GridView實現自定義時間貨幣等字符串格式
GridView實現用「...」代替超長字符串
GridView通常換行與強制換行
GridView顯示隱藏某一列
GridView彈出新頁面/彈出新窗口
GridView固定表頭(不用javascript只用CSS,2行代碼,很好用)
GridView合併表頭多重表頭無錯完美版(以合併3列3行舉例)
GridView突出顯示某一單元格(例如金額低於多少,分數不及格等)
GridView加入自動求和求平均值小計
GridView數據導入Excel/Excel數據讀入GridView
javascript




1.GridView無代碼分頁排序html

效果圖:
o_gv5.gif
1.AllowSorting設爲True,aspx代碼中是AllowSorting="True";
2.默認1頁10條,若是要修改每頁條數,修改PageSize便可,在aspx代碼中是PageSize="12"。
3.默認的是單向排序的,右擊GridView彈出「屬性」,選擇AllowSorting爲True便可。
java

2.GridView選中,編輯,取消,刪除:sql

效果圖:
o_gv6.gif數據庫

後臺代碼:
你可使用sqlhelper,本文沒用。代碼以下:
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;express

public partial class _Default : System.Web.UI.Page
{安全

//清清月兒http://blog.csdn.net/21aspnet
   SqlConnection sqlcon;
   SqlCommand sqlcom;
   string strCon = "Data Source=(local);Database=數據庫名;Uid=賬號;Pwd=密碼";
   protected void Page_Load(object sender, EventArgs e)
   {
       if (!IsPostBack)
       {
           bind();
       }
   }
   protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
   {
       GridView1.EditIndex = e.NewEditIndex;
       bind();
   }app

//刪除
   protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
   {
       string sqlstr = "delete from 表 where id='" + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";
       sqlcon = new SqlConnection(strCon);
       sqlcom = new SqlCommand(sqlstr,sqlcon);
       sqlcon.Open();
       sqlcom.ExecuteNonQuery();
       sqlcon.Close();
       bind();
   }asp.net

//更新
   protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
   {
       sqlcon = new SqlConnection(strCon);
       string sqlstr = "update 表 set 字段1='"
           + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[1].Controls[0])).Text.ToString().Trim() + "',字段2='"
           + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[2].Controls[0])).Text.ToString().Trim() + "',字段3='"
           + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[3].Controls[0])).Text.ToString().Trim() + "' where id='"
           + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";
       sqlcom=new SqlCommand(sqlstr,sqlcon);
       sqlcon.Open();
       sqlcom.ExecuteNonQuery();
       sqlcon.Close();
       GridView1.EditIndex = -1;
       bind();
   }ide

//取消
   protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
   {
       GridView1.EditIndex = -1;
       bind();
   }

//綁定
   public void bind()
   {
       string sqlstr = "select * from 表";
       sqlcon = new SqlConnection(strCon);
       SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);
       DataSet myds = new DataSet();
       sqlcon.Open();
       myda.Fill(myds, "表");
       GridView1.DataSource = myds;
       GridView1.DataKeyNames = new string[] { "id" };//主鍵
       GridView1.DataBind();
       sqlcon.Close();
   }
}

前臺主要代碼:
                           ... ...
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" CellPadding="4"
                       ForeColor="#333333" GridLines="None" OnRowDeleting="GridView1_RowDeleting" OnRowEditing="GridView1_RowEditing"
                       OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit">
                       <FooterStyle BackColor="#990000" Font-Bold="True" ForeColor="White" />
                       <Columns>
                           <asp:BoundField DataField="×××號碼" HeaderText="用戶ID" ReadOnly="True" />
                           <asp:BoundField DataField="姓名" HeaderText="用戶姓名" />
                           <asp:BoundField DataField="員工性別" HeaderText="性別" />
                           <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" />
                           <asp:CommandField HeaderText="選擇" ShowSelectButton="True" />
                           <asp:CommandField HeaderText="編輯" ShowEditButton="True" />
                           <asp:CommandField HeaderText="刪除" ShowDeleteButton="True" />
                       </Columns>
                       <RowStyle ForeColor="#000066" />
                       <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
                       <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
                       <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
                   </asp:GridView>


3.GridView正反雙向排序:
效果圖:點姓名各2次的排序,點其餘也同樣能夠。
o_gv7.gifo_gv8.gif
後臺代碼:
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
public partial class Default3 : System.Web.UI.Page
{

//清清月兒的博客http://blog.csdn.net/21aspnet
   SqlConnection sqlcon;
   string strCon = "Data Source=(local);Database=北風貿易;Uid=sa;Pwd=";
   protected void Page_Load(object sender, EventArgs e)
   {
       if (!IsPostBack)
       {
           ViewState["SortOrder"] = "×××號碼";
           ViewState["OrderDire"] = "ASC";
           bind();
       }
   }
   protected void GridView1_Sorting(object sender, GridViewSortEventArgs e)
   {
       string sPage = e.SortExpression;
       if (ViewState["SortOrder"].ToString() == sPage)
       {
           if (ViewState["OrderDire"].ToString() == "Desc")
               ViewState["OrderDire"] = "ASC";
           else
               ViewState["OrderDire"] = "Desc";
       }
       else
       {
           ViewState["SortOrder"] = e.SortExpression;
       }
       bind();
   }

   public void bind()
   {

       string sqlstr = "select top 5 * from 飛狐工做室";
       sqlcon = new SqlConnection(strCon);
       SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);
       DataSet myds = new DataSet();
       sqlcon.Open();
       myda.Fill(myds, "飛狐工做室");
       DataView view = myds.Tables["飛狐工做室"].DefaultView;
       string sort = (string)ViewState["SortOrder"] + " " + (string)ViewState["OrderDire"];
       view.Sort = sort;
       GridView1.DataSource = view;
       GridView1.DataBind();
       sqlcon.Close();
   }
}

前臺主要代碼:
<asp:GridView ID="GridView1" runat="server" AllowSorting="True" AutoGenerateColumns="False"
                       CellPadding="3" Font-Size="9pt" OnSorting="GridView1_Sorting" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px">
                       <FooterStyle BackColor="White" ForeColor="#000066" />
                       <Columns>
                            <asp:BoundField DataField="×××號碼" HeaderText="用戶ID" SortExpression="×××號碼" />
                           <asp:BoundField DataField="姓名" HeaderText="用戶姓名" SortExpression="姓名"/>
                           <asp:BoundField DataField="員工性別" HeaderText="性別" SortExpression="員工性別"/>
                           <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" SortExpression="家庭住址"/>

                       </Columns>
                       <RowStyle ForeColor="#000066" />
                       <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
                       <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
                       <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
                   </asp:GridView>


4.GridView和下拉菜單DropDownList結合:

效果圖:
o_gv9.gif

後臺代碼:
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
public partial class Default4 : System.Web.UI.Page
{
   SqlConnection sqlcon;
   string strCon = "Data Source=(local);Database=北風貿易;Uid=sa;Pwd=sa";
   protected void Page_Load(object sender, EventArgs e)
   {
       DropDownList ddl;
       if (!IsPostBack)
       {
           string sqlstr = "select top 5 * from 飛狐工做室";
           sqlcon = new SqlConnection(strCon);
           SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);
           DataSet myds = new DataSet();
           sqlcon.Open();
           myda.Fill(myds, "飛狐工做室");
           GridView1.DataSource = myds;
           GridView1.DataBind();
           for (int i = 0; i <= GridView1.Rows.Count - 1; i++)
           {
               DataRowView mydrv = myds.Tables["飛狐工做室"].DefaultView[i];
               if (Convert.ToString(mydrv["員工性別"]).Trim() == "True")
               {
                   ddl = (DropDownList)GridView1.Rows[i].FindControl("DropDownList1");
                   ddl.SelectedIndex = 0;
               }
               if (Convert.ToString(mydrv["員工性別"]).Trim() == "False")
               {
                   ddl = (DropDownList)GridView1.Rows[i].FindControl("DropDownList1");
                   ddl.SelectedIndex = 1;
               }
           }
           sqlcon.Close();
       }
   }
   public SqlDataReader ddlbind()
   {
       string sqlstr = "select distinct 員工性別 from 飛狐工做室";
       sqlcon = new SqlConnection(strCon);
       SqlCommand sqlcom = new SqlCommand(sqlstr, sqlcon);
       sqlcon.Open();
       return sqlcom.ExecuteReader();
   }

前臺主要代碼:
<asp:GridView ID="GridView1" runat="server" AllowSorting="True" AutoGenerateColumns="False"
                       CellPadding="3" Font-Size="9pt"  BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px">
                       <FooterStyle BackColor="White" ForeColor="#000066" />
                       <Columns>
                            <asp:BoundField DataField="×××號碼" HeaderText="用戶ID" SortExpression="×××號碼" />
                           <asp:BoundField DataField="姓名" HeaderText="用戶姓名" SortExpression="姓名"/>
                           <asp:TemplateField HeaderText="員工性別">
                               <ItemTemplate>
                                   <asp:DropDownList ID="DropDownList1" runat="server" DataSource='<%# ddlbind()%>' DataValueField="員工性別" DataTextField="員工性別">
                                   </asp:DropDownList>
                               </ItemTemplate>
                           </asp:TemplateField>
                           <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" SortExpression="家庭住址"/>

                       </Columns>
                       <RowStyle ForeColor="#000066" />
                       <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
                       <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
                       <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
                   </asp:GridView>


5.GridView和CheckBox結合:

效果圖:
o_gv10.gif

後臺代碼:

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;

public partial class Default5 : System.Web.UI.Page
{
//清清月兒http://blog.csdn.net/21aspnet
   SqlConnection sqlcon;
   string strCon = "Data Source=(local);Database=北風貿易;Uid=sa;Pwd=sa";
   protected void Page_Load(object sender, EventArgs e)
   {
       if (!IsPostBack)
       {
           bind();
       }
   }
   protected void CheckBox2_CheckedChanged(object sender, EventArgs e)
   {
       for (int i = 0; i <= GridView1.Rows.Count - 1; i++)
       {
           CheckBox cbox = (CheckBox)GridView1.Rows[i].FindControl("CheckBox1");
           if (CheckBox2.Checked == true)
           {
               cbox.Checked = true;
           }
           else
           {
               cbox.Checked = false;
           }
       }
   }
   protected void Button2_Click(object sender, EventArgs e)
   {
       sqlcon = new SqlConnection(strCon);
       SqlCommand sqlcom;
       for (int i = 0; i <= GridView1.Rows.Count - 1; i++)
       {
           CheckBox cbox = (CheckBox)GridView1.Rows[i].FindControl("CheckBox1");
           if (cbox.Checked == true)
           {

               string sqlstr = "delete from 飛狐工做室 where ×××號碼='" + GridView1.DataKeys[i].Value + "'";
               sqlcom = new SqlCommand(sqlstr, sqlcon);
               sqlcon.Open();
               sqlcom.ExecuteNonQuery();
               sqlcon.Close();
           }
       }
       bind();
   }
   protected void Button1_Click(object sender, EventArgs e)
   {
       CheckBox2.Checked = false;
       for (int i = 0; i <= GridView1.Rows.Count - 1; i++)
       {
           CheckBox cbox = (CheckBox)GridView1.Rows[i].FindControl("CheckBox1");
           cbox.Checked = false;
       }
   }
   public void bind()
   {
       string sqlstr = "select top 5 * from 飛狐工做室";
       sqlcon = new SqlConnection(strCon);
       SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);
       DataSet myds = new DataSet();
       sqlcon.Open();
       myda.Fill(myds, "tb_Member");
       GridView1.DataSource = myds;
       GridView1.DataKeyNames = new string[] { "×××號碼" };
       GridView1.DataBind();
       sqlcon.Close();
   }
}

前臺主要代碼:

<asp:GridView ID="GridView1" runat="server" AllowSorting="True" AutoGenerateColumns="False"
                       CellPadding="3" Font-Size="9pt"  BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px">
                       <FooterStyle BackColor="White" ForeColor="#000066" />
                       <Columns>
                            <asp:TemplateField>
                               <ItemTemplate>
                                   <asp:CheckBox ID="CheckBox1" runat="server" />
                               </ItemTemplate>
                           </asp:TemplateField>
                            <asp:BoundField DataField="×××號碼" HeaderText="用戶ID" SortExpression="×××號碼" />
                           <asp:BoundField DataField="姓名" HeaderText="用戶姓名" SortExpression="姓名"/>

                           <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" SortExpression="家庭住址"/>

                       </Columns>
                       <RowStyle ForeColor="#000066" />
                       <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
                       <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
                       <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
                   </asp:GridView>
                    <asp:CheckBox ID="CheckBox2" runat="server" AutoPostBack="True" Font-Size="9pt" OnCheckedChanged="CheckBox2_CheckedChanged"
                       Text="全選" />
                   <asp:Button ID="Button1" runat="server" Font-Size="9pt" Text="取消" OnClick="Button1_Click" />
                   <asp:Button ID="Button2" runat="server" Font-Size="9pt" Text="刪除" OnClick="Button2_Click" />


6.鼠標移到GridView某一行時改變該行的背景色方法一:

效果圖:
o_gv12.gif
作法:
雙擊GridView的OnRowDataBound事件;
在後臺的GridView1_RowDataBound()方法添加代碼,最後代碼以下所示:
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
   {
       int i;
       //執行循環,保證每條數據均可以更新
       for (i = 0; i < GridView1.Rows.Count; i++)
       {
           //首先判斷是不是數據行
           if (e.Row.RowType == DataControlRowType.DataRow)
           {
               //當鼠標停留時更改背景色
               e.Row.Attributes.Add(" "c=this.style.backgroundColor;this.style.backgroundColor='#00A9FF'");
               //當鼠標移開時還原背景色
               e.Row.Attributes.Add(" "this.style.backgroundColor=c");
           }
       }

   }

前臺代碼:
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
   <title>實現鼠標劃過改變GridView的行背景色 清清月兒http://blog.csdn.net/21aspnet </title>
</head>
<body>
   <form id="form1" runat="server">
   <div>
       <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="×××號碼"
           DataSourceID="SqlDataSource1" AllowSorting="True" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" CellPadding="3" Font-Size="12px" OnRowDataBound="GridView1_RowDataBound">
           <Columns>
               <asp:BoundField DataField="×××號碼" HeaderText="×××號碼" ReadOnly="True" SortExpression="×××號碼" />
               <asp:BoundField DataField="姓名" HeaderText="姓名" SortExpression="姓名" />
               <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" SortExpression="家庭住址" />
               <asp:BoundField DataField="郵政編碼" HeaderText="郵政編碼" SortExpression="郵政編碼" />
           </Columns>
           <FooterStyle BackColor="White" ForeColor="#000066" />
           <RowStyle ForeColor="#000066" />
           <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
           <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
           <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
       </asp:GridView>
       <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:北風貿易ConnectionString1 %>"
           SelectCommand="SELECT top 5 [×××號碼], [姓名], [員工性別], [家庭住址], [郵政編碼] FROM [飛狐工做室]" DataSourceMode="DataReader"></asp:SqlDataSource>

   </div>
   </form>
</body>
</html>

7.鼠標移到GridView某一行時改變該行的背景色方法二:

效果圖:
o_gv13.gif

作法:和上面的同樣就是代碼不一樣
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
   {
       //int i;
       ////執行循環,保證每條數據均可以更新
       //for (i = 0; i < GridView1.Rows.Count; i++)
       //{
       //    //首先判斷是不是數據行
       //    if (e.Row.RowType == DataControlRowType.DataRow)
       //    {
       //        //當鼠標停留時更改背景色
       //        e.Row.Attributes.Add(" "c=this.style.backgroundColor;this.style.backgroundColor='#00A9FF'");
       //        //當鼠標移開時還原背景色
       //        e.Row.Attributes.Add(" "this.style.backgroundColor=c");
       //    }
       //}
       //若是是綁定數據行
       if (e.Row.RowType == DataControlRowType.DataRow)
       {
           //鼠標通過時,行背景色變
           e.Row.Attributes.Add(" "this.style.backgroundColor='#E6F5FA'");
           //鼠標移出時,行背景色變
           e.Row.Attributes.Add(" "this.style.backgroundColor='#FFFFFF'");
       }

   }

8.GridView實現刪除時彈出確認對話框:

效果圖:
o_gv14.gif

實現方法:
雙擊GridView的OnRowDataBound事件;
在後臺的GridView1_RowDataBound()方法添加代碼,最後代碼以下所示:

   protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
   {
       //若是是綁定數據行
       if (e.Row.RowType == DataControlRowType.DataRow)
       {
            if (e.Row.RowState == DataControlRowState.Normal || e.Row.RowState == DataControlRowState.Alternate)
           {
               ((LinkButton)e.Row.Cells[6].Controls[0]).Attributes.Add(" "javascript:return confirm('你確認要刪除:/"" + e.Row.Cells[1].Text + "/"嗎?')");
           }
       }

   }

9.GridView實現自動編號:

效果圖:
o_gv15.gif

實現方法:
雙擊GridView的OnRowDataBound事件;
在後臺的GridView1_RowDataBound()方法添加代碼,最後代碼以下所示:
   protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
   {
       //若是是綁定數據行 //清清月兒http://blog.csdn.net/21aspnet
       if (e.Row.RowType == DataControlRowType.DataRow)
       {
           ////鼠標通過時,行背景色變
           //e.Row.Attributes.Add(" "this.style.backgroundColor='#E6F5FA'");
           ////鼠標移出時,行背景色變
           //e.Row.Attributes.Add(" "this.style.backgroundColor='#FFFFFF'");

           ////當有編輯列時,避免出錯,要加的RowState判斷
           //if (e.Row.RowState == DataControlRowState.Normal || e.Row.RowState == DataControlRowState.Alternate)
           //{
           //    ((LinkButton)e.Row.Cells[6].Controls[0]).Attributes.Add(" "javascript:return confirm('你確認要刪除:/"" + e.Row.Cells[1].Text + "/"嗎?')");
           //}

       }
       if (e.Row.RowIndex != -1)
       {
           int id = e.Row.RowIndex + 1;
           e.Row.Cells[0].Text = id.ToString();
       }

   }


注意這時最好把前臺的第一列的表頭該爲「編號」,由於之前的第一列被「吃掉」了。
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" CellPadding="3" OnRowDeleting="GridView1_RowDeleting" OnRowEditing="GridView1_RowEditing"
                       OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px" OnRowDataBound="GridView1_RowDataBound">
                       <FooterStyle BackColor="White" ForeColor="#000066" />
                       <Columns>
                           <asp:BoundField DataField="×××號碼" HeaderText="編號" ReadOnly="True" />
                           <asp:BoundField DataField="姓名" HeaderText="用戶姓名" />
                           <asp:BoundField DataField="員工性別" HeaderText="性別" />
                           <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" />
                           <asp:CommandField HeaderText="選擇" ShowSelectButton="True" />
                           <asp:CommandField HeaderText="編輯" ShowEditButton="True" />
                           <asp:CommandField HeaderText="刪除" ShowDeleteButton="True" />
                       </Columns>
                       <RowStyle ForeColor="#000066" />
                       <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
                       <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
                       <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
                   </asp:GridView>

10.GridView實現自定義時間貨幣等字符串格式:

效果圖:
圖1-未格式化前
o_gv16.gif
圖2-格式化後
o_gv17.gif
解決方法:

在asp.net 2.0中,若是要在綁定列中顯示好比日期格式等,若是用下面的方法是顯示不了的

<asp :BoundField DataField="CreationDate"
DataFormatString="{0:M-dd-yyyy}"
HeaderText="CreationDate" />

主要是因爲htmlencode屬性默認設置爲true,已防止XSS***,安全起見而用的,因此,能夠有如下兩種方法解決

一、

<asp :GridView ID="GridView1" runat="server">
<columns>
<asp :BoundField DataField="CreationDate"
DataFormatString="{0:M-dd-yyyy}"
HtmlEncode="false"
HeaderText="CreationDate" />
</columns>
</asp>

將htmlencode設置爲false便可

另外的解決方法爲,使用模版列

<asp :GridView ID="GridView3" runat="server" >
<columns>
<asp :TemplateField HeaderText="CreationDate" >
<edititemtemplate>
<asp :Label ID="Label1" runat="server"
Text='<%# Eval("CreationDate", "{0:M-dd-yyyy}") %>'>
</asp>
</edititemtemplate>
<itemtemplate>
<asp :Label ID="Label1" runat="server"
Text=’<%# Bind("CreationDate", "{0:M-dd-yyyy}") %>'>
</asp>
</itemtemplate>
</asp>
</columns>
</asp>

前臺代碼:
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="×××號碼"
           DataSourceID="SqlDataSource1" AllowSorting="True" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" CellPadding="3" Font-Size="12px" OnRowDataBound="GridView1_RowDataBound">
           <Columns>
               <asp:BoundField DataField="×××號碼" HeaderText="×××號碼" ReadOnly="True" SortExpression="×××號碼" />
               <asp:BoundField DataField="姓名" HeaderText="姓名" SortExpression="姓名" />
               <asp:BoundField DataField="郵政編碼" HeaderText="郵政編碼" SortExpression="郵政編碼" />
               <asp:BoundField DataField="出生日期" HeaderText="出生日期" SortExpression="出生日期" />
               <asp:BoundField DataField="起薪" HeaderText="起薪" SortExpression="起薪" />
           </Columns>
           <FooterStyle BackColor="White" ForeColor="#000066" />
           <RowStyle ForeColor="#000066" />
           <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
           <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
           <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
       </asp:GridView>
       <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:北風貿易ConnectionString1 %>"
           SelectCommand="SELECT top 5 [出生日期], [起薪], [×××號碼], [姓名], [家庭住址], [郵政編碼] FROM [飛狐工做室]" DataSourceMode="DataReader"></asp:SqlDataSource>

附錄-經常使用格式化公式:
{0:C}  貨幣;
{0:D4}由0填充的4個字符寬的字段中顯示整數;
{0:000.0}四捨五入小數點保留第幾位有效數字;
{0:N2}小數點保留2位有效數字;{0:N2}%   小數點保留2位有效數字加百分號;
{0:D}長日期;{0:d}短日期;{0:yy-MM-dd}   例如07-3-25;;{0:yyyy-MM-dd}  例如2007-3-25

11.GridView實現用「...」代替超長字符串:

效果圖:
o_gv18.gif
解決方法:數據綁定後過濾每一行便可
for (int i = 0; i <= GridView1.Rows.Count - 1; i++)
       {
           DataRowView mydrv;
           string gIntro;
           if (GridView1.PageIndex == 0)
           {
               mydrv = myds.Tables["飛狐工做室"].DefaultView[i];//表名
               gIntro = Convert.ToString(mydrv["家庭住址"]);//所要處理的字段
               GridView1.Rows[i].Cells[3].Text = SubStr(gIntro, 2);
           }
           else
           {
               mydrv = myds.Tables["飛狐工做室"].DefaultView[i + (5 * GridView1.PageIndex)];
               gIntro = Convert.ToString(mydrv["家庭住址"]);
               GridView1.Rows[i].Cells[3].Text = SubStr(gIntro, 2);
           }
       }

調用的方法:

   public string SubStr(string sString, int nLeng)
   {
       if (sString.Length <= nLeng)
       {
           return sString;
       }
       string sNewStr = sString.Substring(0, nLeng);
       sNewStr = sNewStr + "...";
       return sNewStr;
   }

後臺所有代碼:
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;

public partial class _Default : System.Web.UI.Page
{
   SqlConnection sqlcon;
   SqlCommand sqlcom;
   string strCon = "Data Source=(local);Database=北風貿易;Uid=sa;Pwd=sa";
   protected void Page_Load(object sender, EventArgs e)
   {
       if (!IsPostBack)
       {
           ViewState["SortOrder"] = "×××號碼";
           ViewState["OrderDire"] = "ASC";
           bind();
       }
   }
   protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
   {
       GridView1.EditIndex = e.NewEditIndex;
       bind();
   }
   protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
   {
       string sqlstr = "delete from 飛狐工做室 where ×××號碼='" + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";
       sqlcon = new SqlConnection(strCon);
       sqlcom = new SqlCommand(sqlstr,sqlcon);
       sqlcon.Open();
       sqlcom.ExecuteNonQuery();
       sqlcon.Close();
       bind();
   }
   protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
   {
       sqlcon = new SqlConnection(strCon);
       string sqlstr = "update 飛狐工做室 set 姓名='"
           + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[1].Controls[0])).Text.ToString().Trim() + "',家庭住址='"
           + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[3].Controls[0])).Text.ToString().Trim() + "' where ×××號碼='"
           + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";
       sqlcom=new SqlCommand(sqlstr,sqlcon);
       sqlcon.Open();
       sqlcom.ExecuteNonQuery();
       sqlcon.Close();
       GridView1.EditIndex = -1;
       bind();
   }
   protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
   {
       GridView1.EditIndex = -1;
       bind();
   }
   public void bind()
   {
       string sqlstr = "select top 5 * from 飛狐工做室";
       sqlcon = new SqlConnection(strCon);
       SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);
       DataSet myds = new DataSet();
       sqlcon.Open();
       myda.Fill(myds, "飛狐工做室");
       GridView1.DataSource = myds;
       GridView1.DataKeyNames = new string[] { "×××號碼" };
       GridView1.DataBind();
       for (int i = 0; i <= GridView1.Rows.Count - 1; i++)
       {
           DataRowView mydrv;
           string gIntro;
           if (GridView1.PageIndex == 0)
           {
               mydrv = myds.Tables["飛狐工做室"].DefaultView[i];
               gIntro = Convert.ToString(mydrv["家庭住址"]);
               GridView1.Rows[i].Cells[3].Text = SubStr(gIntro, 2);
           }
           else
           {
               mydrv = myds.Tables["飛狐工做室"].DefaultView[i + (5 * GridView1.PageIndex)];
               gIntro = Convert.ToString(mydrv["家庭住址"]);
               GridView1.Rows[i].Cells[3].Text = SubStr(gIntro, 2);
           }
       }

       sqlcon.Close();
   }
   public string SubStr(string sString, int nLeng)
   {
       if (sString.Length <= nLeng)
       {
           return sString;
       }
       string sNewStr = sString.Substring(0, nLeng);
       sNewStr = sNewStr + "...";
       return sNewStr;
   }
   protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
   {
       //若是是綁定數據行
       if (e.Row.RowType == DataControlRowType.DataRow)
       {
           ////鼠標通過時,行背景色變
           //e.Row.Attributes.Add(" "this.style.backgroundColor='#E6F5FA'");
           ////鼠標移出時,行背景色變
           //e.Row.Attributes.Add(" "this.style.backgroundColor='#FFFFFF'");

           ////當有編輯列時,避免出錯,要加的RowState判斷
           //if (e.Row.RowState == DataControlRowState.Normal || e.Row.RowState == DataControlRowState.Alternate)
           //{
           //    ((LinkButton)e.Row.Cells[6].Controls[0]).Attributes.Add(" "javascript:return confirm('你確認要刪除:/"" + e.Row.Cells[1].Text + "/"嗎?')");
           //}

       }
       if (e.Row.RowIndex != -1)
       {
           int id = e.Row.RowIndex + 1;
           e.Row.Cells[0].Text = id.ToString();
       }

   }
}

11.GridView通常換行與強制換行:

效果圖:
o_gv19.gif
首先設置<asp:BoundField DataField="家庭住址" HeaderText="家庭住址"  ItemStyle-Width="100" />
gridview裏有一列綁定的數據很長,顯示的時候在一行裏面顯示,頁面拉得很寬。
緣由是連續英文段爲一個總體致使的,在RowDataBound中添加上了一句e.Row.Cells[2].Style.Add("word-break", "break-all")就能夠。

若是要給全部的列增長此屬性:
protected void Page_Load(object sender, EventArgs e)
   {
       //正常換行
       GridView1.Attributes.Add("style", "word-break:keep-all;word-wrap:normal");
       //下面這行是自動換行
       GridView1.Attributes.Add("style", "word-break:break-all;word-wrap:break-word");
       if (!IsPostBack)
       {
            bind();//調用數據綁定便可
       }
   }
總之:善用CSS的word-break:break-all;word-wrap:break-word屬性便可,這個屬性是通用的對於頑固的南換行問題均可以解決,不侷限於GridView。

12.GridView顯示隱藏某一列:
本方案爲月兒首創,不一樣於網上其餘方式,我以爲用一個CheckBox更人性化,這樣能夠隱藏沒必要要的列,讓用戶本身選擇須要出現的列,在處理多列時這是一個很好的解決方案!

效果圖:
圖1-開始
o_gv22.gif
圖2-點擊顯示的CheckBox後
o_gv21.gif

解決方案:
public void bind()
   {
       string sqlstr = "select top 5 * from 飛狐工做室";
       sqlcon = new SqlConnection(strCon);
       SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);
       DataSet myds = new DataSet();
       sqlcon.Open();
       myda.Fill(myds, "飛狐工做室");
       GridView1.DataSource = myds;
       GridView1.DataKeyNames = new string[] { "×××號碼" };
       GridView1.DataBind();
       sqlcon.Close();
       GridView1.Columns[3].Visible = false;//一開始隱藏
       CheckBox1.Checked = false;//若是不這樣後面的代碼會把他True

   }

雙擊CheckBox1,在CheckedChanged方法裏寫上代碼,最後代碼以下:
protected void CheckBox1_CheckedChanged(object sender, EventArgs e)
   {
        GridView1.Columns[3].Visible=! GridView1.Columns[3].Visible;
        Response.Write("GridView1的第4列如今的顯示隱藏狀態是:"+GridView1.Columns[3].Visible.ToString());
   }

注意:CheckBox1的AutoPostBack要True

後臺所有代碼以下:

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;

public partial class _Default : System.Web.UI.Page
{
   SqlConnection sqlcon;
   SqlCommand sqlcom;
   string strCon = "Data Source=(local);Database=北風貿易;Uid=sa;Pwd=sa";
   protected void Page_Load(object sender, EventArgs e)
   {
       if (!IsPostBack)
       {
           ViewState["SortOrder"] = "×××號碼";
           ViewState["OrderDire"] = "ASC";
           bind();
       }
   }
   protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
   {
       GridView1.EditIndex = e.NewEditIndex;
       bind();
   }
   protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
   {
       string sqlstr = "delete from 飛狐工做室 where ×××號碼='" + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";
       sqlcon = new SqlConnection(strCon);
       sqlcom = new SqlCommand(sqlstr,sqlcon);
       sqlcon.Open();
       sqlcom.ExecuteNonQuery();
       sqlcon.Close();
       bind();
   }
   protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
   {
       sqlcon = new SqlConnection(strCon);
       string sqlstr = "update 飛狐工做室 set 姓名='"
           + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[1].Controls[0])).Text.ToString().Trim() + "',家庭住址='"
           + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[3].Controls[0])).Text.ToString().Trim() + "' where ×××號碼='"
           + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";
       sqlcom=new SqlCommand(sqlstr,sqlcon);
       sqlcon.Open();
       sqlcom.ExecuteNonQuery();
       sqlcon.Close();
       GridView1.EditIndex = -1;
       bind();
   }
   protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
   {
       GridView1.EditIndex = -1;
       bind();
   }
   public void bind()
   {
       string sqlstr = "select top 5 * from 飛狐工做室";
       sqlcon = new SqlConnection(strCon);
       SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);
       DataSet myds = new DataSet();
       sqlcon.Open();
       myda.Fill(myds, "飛狐工做室");
       GridView1.DataSource = myds;
       GridView1.DataKeyNames = new string[] { "×××號碼" };
       GridView1.DataBind();
       sqlcon.Close();
       GridView1.Columns[3].Visible = false;
       CheckBox1.Checked = false;
   }
   protected void CheckBox1_CheckedChanged(object sender, EventArgs e)
   {
        GridView1.Columns[3].Visible=! GridView1.Columns[3].Visible;
        Response.Write("GridView1的第4列如今的顯示隱藏狀態是:"+GridView1.Columns[3].Visible.ToString());
   }
}

前臺代碼:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
   <title>GridView顯示隱藏列 清清月兒http://blog.csdn.net/21aspnet </title>
</head>
<body style="font-size=12px">
   <form id="form1" runat="server">
   <div>
                  <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" CellPadding="3" OnRowDeleting="GridView1_RowDeleting" OnRowEditing="GridView1_RowEditing"
                       OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px"  >
                       <FooterStyle BackColor="White" ForeColor="#000066" />
                       <Columns>
                           <asp:BoundField DataField="×××號碼" HeaderText="編號" ReadOnly="True" />
                           <asp:BoundField DataField="姓名" HeaderText="用戶姓名" />
                           <asp:BoundField DataField="郵政編碼" HeaderText="郵政編碼" SortExpression="郵政編碼" />
                           <asp:BoundField DataField="家庭住址" HeaderText="家庭住址"  />
                           <asp:CommandField HeaderText="選擇" ShowSelectButton="True" />
                           <asp:CommandField HeaderText="編輯" ShowEditButton="True" />
                           <asp:CommandField HeaderText="刪除" ShowDeleteButton="True" />
                       </Columns>
                       <RowStyle ForeColor="#000066" />
                       <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
                       <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
                       <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
                   </asp:GridView>
       <asp:CheckBox ID="CheckBox1" runat="server" AutoPostBack="True" Font-Size="12px"
           OnCheckedChanged="CheckBox1_CheckedChanged" Text="顯示隱藏家庭住址" /></div>
   </form>
</body>
</html>

13.GridView彈出新頁面/彈出制定大小位置新窗口:

效果圖:
o_gv23.gif

方案一:簡單的方法,新窗口不固定大小
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" CellPadding="3" OnRowDeleting="GridView1_RowDeleting" OnRowEditing="GridView1_RowEditing"
                       OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px"  >
                       <FooterStyle BackColor="White" ForeColor="#000066" />
                       <Columns>
                           <asp:BoundField DataField="×××號碼" HeaderText="編號" ReadOnly="True" />
                           <asp:BoundField DataField="郵政編碼" HeaderText="郵政編碼" SortExpression="郵政編碼" />
                           <asp:BoundField DataField="家庭住址" HeaderText="家庭住址"  />
<asp:HyperLinkField HeaderText="姓名" Text="姓名" DataNavigateUrlFields="姓名" DataNavigateUrlFormatString="Default6.aspx?GoodsID={0}" Target="mainframe" NavigateUrl="~/Default6.aspx" DataTextField="姓名" >
                   </asp:HyperLinkField>
                           <asp:CommandField HeaderText="選擇" ShowSelectButton="True" />
                           <asp:CommandField HeaderText="編輯" ShowEditButton="True" />
                           <asp:CommandField HeaderText="刪除" ShowDeleteButton="True" />
                       </Columns>
                       <RowStyle ForeColor="#000066" />
                       <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
                       <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
                       <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
                   </asp:GridView>
DataNavigateUrlFields是連接的字段名,DataNavigateUrlFormatString是路徑。

方案二:精確控制彈出窗口大小位置
<asp:HyperLinkColumn DataNavigateUrlField="EmployeeID" DataNavigateUrlFormatString="javascript:varwin=window.open('detail.aspx?ID={0}',null,'width=300,height=200');window.Close();"
      DataTextField="LastName" HeaderText="LastName"></asp:HyperLinkColumn>

使用的是結合javascript的window.open方法,關於window.open的參數網上有不少帖子,本站也有許多參考
彈出窗口大全http://blog.csdn.net/21aspnet/archive/2004/10/25/150231.aspx   便可!

 14.GridView固定表頭(不用javascript只用CSS!,很好用)

效果圖:
o_gv24.gif

代碼:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
   <title>GridView固定表頭 清清月兒http://blog.csdn.net/21aspnet </title>
       <style>
.Freezing
  {

  position:relative ;
  table-layout:fixed;
  top:expression(this.offsetParent.scrollTop);  
  z-index: 10;
  }

.Freezing th{text-overflow:ellipsis;overflow:hidden;white-space: nowrap;padding:2px;}
</style>
</head>
<body style="font-size=12px">
   <form id="form1" runat="server">
   <div style="overflow-y: scroll; height: 200px;width:300px" id="dvBody">
                  <asp:GridView ID="GridView1" runat="server"    AutoGenerateColumns="False" CellPadding="3" OnRowDeleting="GridView1_RowDeleting" OnRowEditing="GridView1_RowEditing"
                       OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px" OnRowCreated="GridView1_RowCreated"  >
                       <FooterStyle BackColor="White" ForeColor="#000066" />
                       <Columns>
                           <asp:BoundField DataField="×××號碼" HeaderText="編號" ReadOnly="True" />
                           <asp:BoundField DataField="郵政編碼" HeaderText="郵政編碼" SortExpression="郵政編碼" />
                           <asp:BoundField DataField="家庭住址" HeaderText="家庭住址"  />
                           <asp:BoundField DataField="姓名" HeaderText="姓名"  />

                       </Columns>
                       <RowStyle ForeColor="#000066" />
                       <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
                       <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left"  CssClass="ms-formlabel DataGridFixedHeader"/>
                       <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" CssClass="Freezing"/>
                   </asp:GridView>
       </div>

   </form>
</body>
</html>

用法:CSS設如上的樣式,HeaderStyle加CssClass="Freezing,套住GridView的Div設置高度寬度 <div style="overflow-y: scroll; height: 200px;width:200px" >

15.GridView合併表頭多重表頭無錯完美版(以合併3列3行舉例)

效果圖:
o_gv25.gif


後臺代碼:
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
using System.Drawing;
public partial class _Default : System.Web.UI.Page
{
   SqlConnection sqlcon;
   SqlCommand sqlcom;
   string strCon = "Data Source=(local);Database=北風貿易;Uid=sa;Pwd=sa";
   protected void Page_Load(object sender, EventArgs e)
   {
       if (!IsPostBack)
       {
           bind();

       }
   }
   protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
   {
       GridView1.EditIndex = e.NewEditIndex;
       bind();
   }
   protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
   {
       sqlcon = new SqlConnection(strCon);
       string sqlstr = "update 飛狐工做室 set 姓名='"
           + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[1].Controls[0])).Text.ToString().Trim() + "',家庭住址='"
           + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[3].Controls[0])).Text.ToString().Trim() + "' where ×××號碼='"
           + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";
       sqlcom=new SqlCommand(sqlstr,sqlcon);
       sqlcon.Open();
       sqlcom.ExecuteNonQuery();
       sqlcon.Close();
       GridView1.EditIndex = -1;
       bind();
   }
   protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
   {
       GridView1.EditIndex = -1;
       bind();
   }
   public void bind()
   {
       string sqlstr = "select top 10 * from 飛狐工做室";
       sqlcon = new SqlConnection(strCon);
       SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);
       DataSet myds = new DataSet();
       sqlcon.Open();
       myda.Fill(myds, "飛狐工做室");
       GridView1.DataSource = myds;
       GridView1.DataKeyNames = new string[] { "×××號碼" };
       GridView1.DataBind();
       sqlcon.Close();
   }

//這裏就是解決方案
protected void GridView1_RowCreated(object sender, GridViewRowEventArgs e)
   {
       switch (e.Row.RowType)
       {
           case DataControlRowType.Header:
               //第一行表頭
               TableCellCollection tcHeader = e.Row.Cells;
               tcHeader.Clear();
               tcHeader.Add(new TableHeaderCell());
               tcHeader[0].Attributes.Add("rowspan", "3"); //跨Row
               tcHeader[0].Attributes.Add("bgcolor", "white");
               tcHeader[0].Text = "";
               tcHeader.Add(new TableHeaderCell());
               //tcHeader[1].Attributes.Add("bgcolor", "Red");
               tcHeader[1].Attributes.Add("colspan", "6"); //跨Column
               tcHeader[1].Text = "所有信息</th></tr><tr>";

               //第二行表頭
               tcHeader.Add(new TableHeaderCell());
               tcHeader[2].Attributes.Add("bgcolor", "DarkSeaGreen");
               tcHeader[2].Text = "×××號碼";
               tcHeader.Add(new TableHeaderCell());
               tcHeader[3].Attributes.Add("bgcolor", "LightSteelBlue");
               tcHeader[3].Attributes.Add("colspan", "2");
               tcHeader[3].Text = "基本信息";
               tcHeader.Add(new TableHeaderCell());
               tcHeader[4].Attributes.Add("bgcolor", "DarkSeaGreen");
               tcHeader[4].Text = "福利";
               tcHeader.Add(new TableHeaderCell());
               tcHeader[5].Attributes.Add("bgcolor", "LightSteelBlue");
               tcHeader[5].Attributes.Add("colspan", "2");
               tcHeader[5].Text = "聯繫方式</th></tr><tr>";

               //第三行表頭
               tcHeader.Add(new TableHeaderCell());
               tcHeader[6].Attributes.Add("bgcolor", "Khaki");
               tcHeader[6].Text = "×××號碼";
               tcHeader.Add(new TableHeaderCell());
               tcHeader[7].Attributes.Add("bgcolor", "Khaki");
               tcHeader[7].Text = "姓名";
               tcHeader.Add(new TableHeaderCell());
               tcHeader[8].Attributes.Add("bgcolor", "Khaki");
               tcHeader[8].Text = "出生日期";
               tcHeader.Add(new TableHeaderCell());
               tcHeader[9].Attributes.Add("bgcolor", "Khaki");
               tcHeader[9].Text = "薪水";
               tcHeader.Add(new TableHeaderCell());
               tcHeader[10].Attributes.Add("bgcolor", "Khaki");
               tcHeader[10].Text = "家庭住址";
               tcHeader.Add(new TableHeaderCell());
               tcHeader[11].Attributes.Add("bgcolor", "Khaki");
               tcHeader[11].Text = "郵政編碼";
               break;
       }
   }
}

前臺:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
   <title>GridView合併多重表頭表頭 清清月兒http://blog.csdn.net/21aspnet </title>
</head>
<body >
   <form id="form1" runat="server">
   <div  >
                  <asp:GridView ID="GridView1" runat="server"    AutoGenerateColumns="False" CellPadding="3"  OnRowEditing="GridView1_RowEditing"
                       OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px" OnRowCreated="GridView1_RowCreated"  >
                       <FooterStyle BackColor="White" ForeColor="#000066" />
                       <Columns>
                           <asp:CommandField HeaderText="編輯" ShowEditButton="True" />
                           <asp:BoundField DataField="×××號碼" HeaderText="編號" ReadOnly="True" />
                           <asp:BoundField DataField="姓名" HeaderText="姓名"  />
                           <asp:BoundField DataField="出生日期" HeaderText="郵政編碼"  />
                            <asp:BoundField DataField="起薪" HeaderText="起薪"  />
                           <asp:BoundField DataField="家庭住址" HeaderText="家庭住址"  />
                           <asp:BoundField DataField="郵政編碼" HeaderText="郵政編碼" />

                       </Columns>
                       <RowStyle ForeColor="#000066" />
                       <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
                       <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left"  CssClass="ms-formlabel DataGridFixedHeader"/>
                       <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
                   </asp:GridView>
       </div>

   </form>
</body>
</html>

16.GridView突出顯示某一單元格(例如金額低於多少,分數不及格等)

效果圖:
o_gv28.gif

解決方案:主要是綁定後過濾
GridView1.DataBind();
for (int i = 0; i <= GridView1.Rows.Count - 1; i++)
       {
           DataRowView mydrv = myds.Tables["飛狐工做室"].DefaultView[i];
           string score = Convert.ToString(mydrv["起薪"]);
           if (Convert.ToDouble(score) < 34297.00)//你們這裏根據具體狀況設置可能ToInt32等等
           {
               GridView1.Rows[i].Cells[4].BackColor = System.Drawing.Color.Red;
           }
       }
       sqlcon.Close();

所有後臺代碼:

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
using System.Drawing;

public partial class Default7 : System.Web.UI.Page
{
   SqlConnection sqlcon;
   SqlCommand sqlcom;
   string strCon = "Data Source=(local);Database=北風貿易;Uid=sa;Pwd=sa";
   protected void Page_Load(object sender, EventArgs e)
   {
       if (!IsPostBack)
       {
           bind();

       }
   }
   protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
   {
       GridView1.EditIndex = e.NewEditIndex;
       bind();
   }
   protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
   {
       sqlcon = new SqlConnection(strCon);
       string sqlstr = "update 飛狐工做室 set 姓名='"
           + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[1].Controls[0])).Text.ToString().Trim() + "',家庭住址='"
           + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[3].Controls[0])).Text.ToString().Trim() + "' where ×××號碼='"
           + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";
       sqlcom = new SqlCommand(sqlstr, sqlcon);
       sqlcon.Open();
       sqlcom.ExecuteNonQuery();
       sqlcon.Close();
       GridView1.EditIndex = -1;
       bind();
   }
   protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
   {
       GridView1.EditIndex = -1;
       bind();
   }
   public void bind()
   {
       string sqlstr = "select top 10 * from 飛狐工做室";
       sqlcon = new SqlConnection(strCon);
       SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);
       DataSet myds = new DataSet();
       sqlcon.Open();
       myda.Fill(myds, "飛狐工做室");
       GridView1.DataSource = myds;
       GridView1.DataKeyNames = new string[] { "×××號碼" };
       GridView1.DataBind();
for (int i = 0; i <= GridView1.Rows.Count - 1; i++)
       {
           DataRowView mydrv = myds.Tables["飛狐工做室"].DefaultView[i];
           string score = Convert.ToString(mydrv["起薪"]);
           if (Convert.ToDouble(score) < 34297.00)//你們這裏根據具體狀況設置可能ToInt32等等

           {
               GridView1.Rows[i].Cells[4].BackColor = System.Drawing.Color.Red;
           }
       }
       sqlcon.Close();
   }
}

前臺代碼:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
   <title>GridView突出顯示某一單元格 清清月兒http://blog.csdn.net/21aspnet </title>
</head>
<body >
   <form id="form1" runat="server">
   <div  >
                  <asp:GridView ID="GridView1" runat="server"    AutoGenerateColumns="False" CellPadding="3"  OnRowEditing="GridView1_RowEditing"
                       OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px"  >
                       <FooterStyle BackColor="White" ForeColor="#000066" />
                       <Columns>
                           <asp:CommandField HeaderText="編輯" ShowEditButton="True" />
                           <asp:BoundField DataField="×××號碼" HeaderText="編號" ReadOnly="True" />
                           <asp:BoundField DataField="姓名" HeaderText="姓名"  />
                           <asp:BoundField DataField="出生日期" HeaderText="郵政編碼"  />
                            <asp:BoundField DataField="起薪" HeaderText="起薪"  DataFormatString="{0:C}" HtmlEncode="false"/>
                           <asp:BoundField DataField="家庭住址" HeaderText="家庭住址"  />
                           <asp:BoundField DataField="郵政編碼" HeaderText="郵政編碼" />

                       </Columns>
                       <RowStyle ForeColor="#000066" />
                       <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
                       <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left"  CssClass="ms-formlabel DataGridFixedHeader"/>
                       <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
                   </asp:GridView>
       </div>

   </form>
</body>
</html>

17.GridView加入自動求和求平均值小計

效果圖:o_gv30.gif
解決方案:    
private double sum = 0;//取指定列的數據和,你要根據具體狀況對待可能你要處理的是int
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
   {

       if (e.Row.RowIndex >= 0)
       {
           sum += Convert.ToDouble(e.Row.Cells[6].Text);
       }
       else if (e.Row.RowType == DataControlRowType.Footer)
       {
           e.Row.Cells[5].Text = "總薪水爲:";
           e.Row.Cells[6].Text = sum.ToString();
           e.Row.Cells[3].Text = "平均薪水爲:";
           e.Row.Cells[4].Text = ((int)(sum / GridView1.Rows.Count)).ToString();

       }
   }

後臺所有代碼:
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
using System.Drawing;

public partial class Default7 : System.Web.UI.Page
{
   SqlConnection sqlcon;
   SqlCommand sqlcom;
   string strCon = "Data Source=(local);Database=北風貿易;Uid=sa;Pwd=sa";
   protected void Page_Load(object sender, EventArgs e)
   {
       if (!IsPostBack)
       {
           bind();

       }
   }
   protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
   {
       GridView1.EditIndex = e.NewEditIndex;
       bind();
   }
   protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
   {
       sqlcon = new SqlConnection(strCon);
       string sqlstr = "update 飛狐工做室 set 姓名='"
           + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[1].Controls[0])).Text.ToString().Trim() + "',家庭住址='"
           + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[3].Controls[0])).Text.ToString().Trim() + "' where ×××號碼='"
           + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";
       sqlcom = new SqlCommand(sqlstr, sqlcon);
       sqlcon.Open();
       sqlcom.ExecuteNonQuery();
       sqlcon.Close();
       GridView1.EditIndex = -1;
       bind();
   }
   protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
   {
       GridView1.EditIndex = -1;
       bind();
   }
   public void bind()
   {
       string sqlstr = "select top 5 * from 飛狐工做室";
       sqlcon = new SqlConnection(strCon);
       SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);
       DataSet myds = new DataSet();
       sqlcon.Open();
       myda.Fill(myds, "飛狐工做室");
       GridView1.DataSource = myds;
       GridView1.DataKeyNames = new string[] { "×××號碼" };
       GridView1.DataBind();
       sqlcon.Close();
   }
   private double sum = 0;//取指定列的數據和
   protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
   {

       if (e.Row.RowIndex >= 0)
       {
           sum += Convert.ToDouble(e.Row.Cells[6].Text);
       }
       else if (e.Row.RowType == DataControlRowType.Footer)
       {
           e.Row.Cells[5].Text = "總薪水爲:";
           e.Row.Cells[6].Text = sum.ToString();
           e.Row.Cells[3].Text = "平均薪水爲:";
           e.Row.Cells[4].Text = ((int)(sum / GridView1.Rows.Count)).ToString();

       }
   }
}
前臺:惟一的花頭就是設置ShowFooter="True" ,不然默認表頭爲隱藏的!
<asp:GridView ID="GridView1" runat="server"    AutoGenerateColumns="False" CellPadding="3"  OnRowEditing="GridView1_RowEditing"
                       OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px" OnRowDataBound="GridView1_RowDataBound" ShowFooter="True"  >
                       <FooterStyle BackColor="White" ForeColor="#000066" />
                       <Columns>
                           <asp:CommandField HeaderText="編輯" ShowEditButton="True" />
                           <asp:BoundField DataField="×××號碼" HeaderText="編號" ReadOnly="True" />
                           <asp:BoundField DataField="姓名" HeaderText="姓名"  />
                           <asp:BoundField DataField="出生日期" HeaderText="郵政編碼"  />
                           <asp:BoundField DataField="家庭住址" HeaderText="家庭住址"  />
                           <asp:BoundField DataField="郵政編碼" HeaderText="郵政編碼" />
                           <asp:BoundField DataField="起薪" HeaderText="起薪"  />

                       </Columns>
                       <RowStyle ForeColor="#000066" />
                       <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
                       <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left"  CssClass="ms-formlabel DataGridFixedHeader"/>
                       <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
                   </asp:GridView>


18.GridView數據導入Excel/Excel數據讀入GridView

效果圖:
o_gv31.gif

解決方案:
頁面增長一個按鈕,單擊事件添加以下方法:
protected void Button1_Click(object sender, EventArgs e)
   {
       Export("application/ms-excel", "學生成績報表.xls");
   }

   private void Export(string FileType, string FileName)
   {
       Response.Charset = "GB2312";
       Response.ContentEncoding = System.Text.Encoding.UTF7;
       Response.AppendHeader("Content-Disposition", "p_w_upload;filename=" + HttpUtility.UrlEncode(FileName, Encoding.UTF8).ToString());
       Response.ContentType = FileType;
       this.EnableViewState = false;
       StringWriter tw = new StringWriter();
       HtmlTextWriter hw = new HtmlTextWriter(tw);
       GridView1.RenderControl(hw);
       Response.Write(tw.ToString());
       Response.End();
   }
//若是沒有下面方法會報錯類型「GridView」的控件「GridView1」必須放在具備 runat=server 的窗體標記內
   public override void VerifyRenderingInServerForm(Control control)
   {
   }
還有因爲是文件操做因此要引入名稱空間IO和Text

後臺代碼:
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
using System.Drawing;
using System.IO;
using System.Text;
public partial class Default7 : System.Web.UI.Page
{
   SqlConnection sqlcon;
   SqlCommand sqlcom;
   string strCon = "Data Source=(local);Database=北風貿易;Uid=sa;Pwd=sa";
   protected void Page_Load(object sender, EventArgs e)
   {
       if (!IsPostBack)
       {
           bind();

       }
   }

   public void bind()
   {
       string sqlstr = "select top 5 * from 飛狐工做室";
       sqlcon = new SqlConnection(strCon);
       SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);
       DataSet myds = new DataSet();
       sqlcon.Open();
       myda.Fill(myds, "飛狐工做室");
       GridView1.DataSource = myds;
       GridView1.DataKeyNames = new string[] { "×××號碼" };
       GridView1.DataBind();
       sqlcon.Close();
   }

   protected void Button1_Click(object sender, EventArgs e)
   {
       Export("application/ms-excel", "學生成績報表.xls");
   }

   private void Export(string FileType, string FileName)
   {
       Response.Charset = "GB2312";
       Response.ContentEncoding = System.Text.Encoding.UTF7;
       Response.AppendHeader("Content-Disposition", "p_w_upload;filename=" + HttpUtility.UrlEncode(FileName, Encoding.UTF8).ToString());
       Response.ContentType = FileType;
       this.EnableViewState = false;
       StringWriter tw = new StringWriter();
       HtmlTextWriter hw = new HtmlTextWriter(tw);
       GridView1.RenderControl(hw);
       Response.Write(tw.ToString());
       Response.End();
   }
   public override void VerifyRenderingInServerForm(Control control)
   {
   }

}

前臺
<asp:GridView ID="GridView1" runat="server"    AutoGenerateColumns="False" CellPadding="3"  
                        BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px"   >
                       <FooterStyle BackColor="White" ForeColor="#000066" />
                       <Columns>
                           <asp:BoundField DataField="×××號碼" HeaderText="編號" ReadOnly="True" />
                           <asp:BoundField DataField="姓名" HeaderText="姓名"  />
                           <asp:BoundField DataField="出生日期" HeaderText="郵政編碼"  />
                           <asp:BoundField DataField="家庭住址" HeaderText="家庭住址"  />
                           <asp:BoundField DataField="郵政編碼" HeaderText="郵政編碼" />
                           <asp:BoundField DataField="起薪" HeaderText="起薪"  />

                       </Columns>
                       <RowStyle ForeColor="#000066" />
                       <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
                       <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left"  CssClass="ms-formlabel DataGridFixedHeader"/>
                       <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
                   </asp:GridView>
       <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="導出" />

讀取Excel數據的代碼:這個很簡單的
private DataSet CreateDataSource()
   {
       string strCon;
       strCon = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + Server.MapPath("excel.xls") + "; Extended Properties=Excel 8.0;";
       OleDbConnection olecon = new OleDbConnection(strCon);
       OleDbDataAdapter myda = new OleDbDataAdapter("SELECT * FROM [Sheet1$]", strCon);
       DataSet myds = new DataSet();
       myda.Fill(myds);
       return myds;
   }
   protected void Button1_Click(object sender, EventArgs e)
   {
       GridView1.DataSource = CreateDataSource();
       GridView1.DataBind();
   }

轉自:http://blog.csdn.net/21aspnet/article/details/7387373

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