在使用asp.net將圖片上傳並存入SqlServer中,而後從SqlServer中讀取並顯示出來數據庫
一,上傳並存入SqlServer
數據庫結構
create table test
{
id identity(1,1),
FImage p_w_picpath
}
相關的存儲過程
Create proc UpdateImage
(
@UpdateImage Image
)
As
Insert Into test(FImage) values(@UpdateImage)
GOapp
在UpPhoto.aspx文件中添加以下:
<input id="UpPhoto" name="UpPhoto" runat="server" type="file">
<asp:Button id="btnAdd" name="btnAdd" runat="server" Text="上傳"></asp:Button>asp.net
而後在後置代碼文件UpPhoto.aspx.cs添加btnAdd按鈕的單擊事件處理代碼:
private void btnAdd_Click(object sender, System.EventArgs e)
{
//得到圖象並把圖象轉換爲byte[]
HttpPostedFile upPhoto=UpPhoto.PostedFile;
int upPhotoLength=upPhoto.ContentLength;
byte[] PhotoArray=new Byte[upPhotoLength];
Stream PhotoStream=upPhoto.InputStream;
PhotoStream.Read(PhotoArray,0,upPhotoLength);ide
//鏈接數據庫
SqlConnection conn=new SqlConnection();
conn.ConnectionString="Data Source=localhost;Database=test;User Id=sa;Pwd=sa";post
SqlCommand cmd=new SqlCommand("UpdateImage",conn);
cmd.CommandType=CommandType.StoredProcedure;.net
cmd.Parameters.Add("@UpdateImage",SqlDbType.Image);
cmd.Parameters["@UpdateImage"].Value=PhotoArray;server
//若是你但願不使用存儲過程來添加圖片把上面四句代碼改成:
//string strSql="Insert into test(FImage) values(@FImage)";
//SqlCommand cmd=new SqlCommand(strSql,conn);
//cmd.Parameters.Add("@FImage",SqlDbType.Image);
//cmd.Parameters["@FImage"].Value=PhotoArray;事件
conn.Open();
cmd.ExecuteNonQuery();
conn.Close();
}圖片
二,從SqlServer中讀取並顯示出來
在須要顯示圖片的地方添加以下代碼:
<asp:p_w_picpath id="imgPhoto" runat="server" ImageUrl="ShowPhoto.aspx"></asp:p_w_picpath>input
ShowPhoto.aspx主體代碼: private void Page_Load(object sender, System.EventArgs e) { if(!Page.IsPostBack) { SqlConnection conn=new SqlConnection() conn.ConnectionString="Data Source=localhost;Database=test;User Id=sa;Pwd=sa"; string strSql="select * from test where id=2";//這裏假設獲取id爲2的圖片 SqlCommand cmd=new SqlCommand() reader.Read(); Response.ContentType="application/octet-stream"; Response.BinaryWrite((Byte[])reader["FImage"]); Response.End(); reader.Close(); } }