WinFrom 在Devexpress裏用GridControl和DataNavigtor進行分頁

1，分頁嘛先要有個SQL 程序才能寫下去 先提供下SQL的思路，對於分頁的SQL我以前帖子有介紹，就不一一介紹了

select top pageSize *     --顯示數量
from (select row_number()   
over(order by EG_ID asc) as rownumber,* --行數
from ExchangGifts) temp_row
where rownumber>((pageIndex-1)*pageSize);--開始頁數  --建議SQL

存儲過程參考下

CREATE proc [dbo].[P_GetCardLevelsPaged]
    @PageSize int,
    @PageIndex int,
    @Count int output,
    @LevelName varchar(20)
as
begin
    select top(@PageSize) * from CardLevels 
    where CL_ID not in(
                        select top(@PageSize*(@PageIndex-1)) CL_ID from CardLevels where CL_LevelName like '%'+@LevelName+'%'
                      ) 
    and CL_LevelName like '%'+@LevelName+'%'
    select @Count=COUNT(*) from CardLevels where CL_LevelName like '%'+@LevelName+'%'
end

GO

2,例子中用的分頁SQL：

SELECT * FROM(SELECT ROW_NUMBER() OVER(order BY E.EG_ID) as rows ,E. * FROM ExchangGifts E)
 AS A WHERE A.rows BETWEEN 1 and 10;   

代碼  註釋詳細

  public partial class XtraForm2 : DevExpress.XtraEditors.XtraForm
    {

        private int pageIndex = 1; //當前頁碼
        private int pageSize = 5;   //每頁的尺寸
        private int pageCount = 0; //總頁數
      
       public XtraForm2()
        {
            InitializeComponent();
        }

  //獲取記錄總數
        public int GetRecordCount()
        {
            int count = 0;
            string sql = "select count(*) from ExchangGifts";
            count = Convert.ToInt32(DBHelper.GetScalar(sql, null, false));
            return count;
        }

        //獲取當前頁的記錄列表
        public DataTable GetListByPage(int startIndex, int endIndex)
        {
            DataTable dt = new DataTable();
            StringBuilder strSql = new StringBuilder();
            strSql.Append("select * from (");
            strSql.Append("select row_number() over(order by t.[EG_ID]) as rows,t.* from ExchangGifts as t) as tt");
            strSql.AppendFormat(" where tt.rows between {0} and {1} ", startIndex, endIndex);
            dt = DBHelper.Query(strSql.ToString(), null);
            return dt;
        }

        //綁定數據表格控件
        public void BindPageGridList()
        {
            //記錄的開始索引
            int startIndex = (pageIndex - 1) * pageSize + 1;
            //記錄的結束索引
            int endIndex = pageIndex * pageSize;
            //總記錄數
            int row = GetRecordCount();

            if (row % pageSize > 0)
            {
                pageCount = row / pageSize + 1;
            }
            else
            {
                pageCount = row / pageSize;
            }
            //若是當前是最後一頁，設置最後一行記錄的索引
            if (pageIndex == pageCount)
            {
                endIndex = row;
            }

            DataTable dt = this.GetListByPage(startIndex, endIndex);
            gc.DataSource = dt;
            nvgDataPager.DataSource = dt;
            nvgDataPager.TextStringFormat = string.Format("第{0}頁，共{1}頁", pageIndex, pageCount);
        }

        private void nvgDataPager_ButtonClick(object sender, NavigatorButtonClickEventArgs e)
        {
            string type = e.Button.Tag.ToString();
            switch (type)
            {
                case "首頁":
                    pageIndex = 1;
                    break;
                case "末頁":
                    pageIndex = pageCount;
                    break;
                case "下一頁":
                    if (pageIndex < pageCount)
                    {
                        pageIndex++;
                    }
                    break;
                case "上一頁":
                    if (pageIndex > 1)
                    {
                        pageIndex--;
                    }
                    break;
            }
            this.BindPageGridList(); //綁定當前頁到控件
        }

}