使用公共的存储过程实现repeater的分页

当一个项目repeater分页多的时候使用公共的存储过程实现分页，是不错的选择

ALTER  PROC [dbo].[P_Common_proc]   -- 通用分页存储过程
@TableName varchar (5000),          --表名
@Fields varchar (5000),      --字段名 (全部字段为*)
@OrderField varchar (5000),          --排序字段( 必须!支持多字段 )
@SqlWhere varchar (5000), --条件语句( 不用加where)
@PageSize int ,                     --每页多少条记录
@PageIndex int = 1 ,             --指定当前为第几页
@RecordCount int output             --返回总条数
as
begin
     Begin Tran --开始事务

     Declare @sql nvarchar(4000);
     Declare @PageCount int;    

     --计算总记录数

     if (@SqlWhere <>'' AND @sqlWhere IS NOT  NULL)
	 BEGIN
              set @sql = 'select @totalRecord = count(*) from ' + @TableName +' where 1=1  ' + @sqlWhere

			  END

     ELSE
       set @sql = 'select @totalRecord = count(*) from ' + @TableName

     EXEC sp_executesql @sql, N'@totalRecord int OUTPUT',@RecordCount OUTPUT--计算总记录数
	 PRINT @sql;     

     --计算总页数
     select @PageCount =CEILING(CONVERT(FLOAT,@RecordCount)/CONVERT(FLOAT,@PageSize) );

     if (@SqlWhere <>'' AND  @sqlWhere  IS NOT  NULL)
	  set @sql = 'Select * FROM (select ROW_NUMBER() Over(order by ' + @OrderField + ') as rowId,' + @Fields + ' from ' + @TableName +' where 1=1 ' + @SqlWhere   

     else

 set @sql = 'Select * FROM (select ROW_NUMBER() Over(order by ' + @OrderField + ') as rowId,' + @Fields + ' from ' + @TableName
     --处理页数超出范围情况
     if @PageIndex <=0
         Set @pageIndex = 1

     if @pageIndex >@RecordCount
         Set @pageIndex = @RecordCount

      --处理开始点和结束点
     Declare @StartRecord int
     Declare @EndRecord int

    set @StartRecord = (@pageIndex- 1)*@PageSize
    set @EndRecord = @pageIndex* @pageSize 

     --继续合成sql 语句
     set @Sql = @Sql + ') as a where rowId > ' + Convert(varchar (50), @StartRecord) + ' and  rowId <=' +   Convert(varchar (50), @EndRecord)

     EXEC sp_executesql  @Sql
	 PRINT @sql;
     ---------------------------------------------------
     If @@Error <> 0
       Begin
         RollBack Tran
         Return - 1
       End
      Else
       Begin
         Commit Tran
         Return @RecordCount ---返回记录总数
       End
END

这是一个公共的存储过程的分页，在.net开发中，Dal是这样调用的。。

   /// <summary>
        /// 查询承运单
        /// </summary>
        /// <param name="Carriers"></param>
        /// <returns></returns>
        public List<CarriersModel> GetCarriersList(CarriersModel Carriers, int PageSize, int PageIndex, out int RecordCount)
        {
            //存储过程名字
            string ProcName = "P_Common_proc";
            //表名
            string TableName = "dbo.Carriers";
            //字段
            string Fields = "*";
            //排序字段
            string OrderField = "CarriersID";
            //条件
            string SqlWhere = "";

            SqlParameter[] param =
            {
                new SqlParameter("@TableName",SqlDbType.VarChar,5000),
                new SqlParameter("@Fields",SqlDbType.VarChar,5000),
                new SqlParameter("@OrderField",SqlDbType.VarChar,5000),
                new SqlParameter("@SqlWhere",SqlDbType.VarChar,5000),
                new SqlParameter("@PageSize",SqlDbType.Int),
                new SqlParameter("@PageIndex",SqlDbType.Int),
                new SqlParameter("@RecordCount",SqlDbType.Int)
            };

            List<CarriersModel> CarriersList = new List<CarriersModel>();
            if (Carriers.CarriersID != 0)
            {
                SqlWhere += $" and CarriersID={Carriers.CarriersID}";
            }
            if (!string.IsNullOrWhiteSpace(Carriers.ReceiveLinkman))
            {
                SqlWhere += $" and ReceiveLinkman like '%{Carriers.ReceiveLinkman}%'";
            }
            if (!string.IsNullOrWhiteSpace(Carriers.SendLinkman))
            {
                SqlWhere += $" and SendLinkman like '%{Carriers.SendLinkman}%'";
            }
            if (!string.IsNullOrWhiteSpace(Carriers.LeaverDate))
            {
                SqlWhere += $" and LeaverDate>{Carriers.LeaverDate}";
            }
            if (!string.IsNullOrWhiteSpace(Carriers.LeaverDateEnd))
            {
                SqlWhere += $" and LeaverDate>{Carriers.LeaverDateEnd}";
            }
            param[0].Value = TableName;
            param[1].Value = Fields;
            param[2].Value = OrderField;
            param[3].Value = SqlWhere;
            param[4].Value = PageSize;
            param[5].Value = PageIndex;
            param[6].Direction = ParameterDirection.Output;
            using (SqlDataReader sdr = DBHelper.ExecuteReaderProc(ProcName, param))
            {
                if (sdr.HasRows)
                {
                    while (sdr.Read())
                    {
                        CarriersModel Carrier = new CarriersModel();
                        Carrier.CarriersID = Convert.ToInt32(sdr["CarriersID"]);
                        Carrier.SendLinkman = sdr["SendLinkman"].ToString();
                        Carrier.SendCompany = sdr["SendCompany"].ToString();
                        Carrier.ReceiveLinkman = sdr["ReceiveLinkman"].ToString();
                        Carrier.ReceiveCompany = sdr["ReceiveCompany"].ToString();
                        Carrier.LeaverDate = sdr["LeaverDate"].ToString();
                        Carrier.CTotalCost = Convert.ToDouble(sdr["TotalCost"]);
                        Carrier.FinishedState = Convert.ToInt32(sdr["FinishedState"]);
                        CarriersList.Add(Carrier);
                    }
                    sdr.Close();
                }

            }
            RecordCount = Convert.ToInt32(param[6].Value);
            return CarriersList;

        }

然后只需要在UI层里面传入

@TableName varchar (5000),          --表名
@Fields varchar (5000),      --字段名 (全部字段为*)
@OrderField varchar (5000),          --排序字段( 必须!支持多字段 )
@SqlWhere varchar (5000), --条件语句( 不用加where)
@PageSize int ,                     --每页多少条记录
@PageIndex int = 1 ,             --指定当前为第几页
@RecordCount int output             --返回总条数

参数即可。

需要注意的是：在UI层调用的时候

  private void BindRptCarrierList()
        {
            CarriersModel carrier = new CarriersModel();
            int cid;
            int.TryParse(txtCarrierId.Text, out cid);
            carrier.CarriersID = cid;
            carrier.LeaverDate = txtLeaverDate.Text;
            carrier.LeaverDateEnd = txtLeaverDateEnd.Text;
            carrier.ReceiveLinkman = txtReceiveLinkman.Text;
            carrier.SendLinkman = txtSendLinkman.Text;
            CarriersBLL carrierbll = new CarriersBLL();
            int PageSize = AspNetPagerTool.PageSize;
            int PageIndex = AspNetPagerTool.CurrentPageIndex;
            int RecordCount = 0;//注意接收总页数的返回值
            rptCarriersList.DataSource = carrierbll.GetCarriersList(carrier, PageSize, PageIndex, out RecordCount);//out
            AspNetPagerTool.RecordCount = RecordCount;
            rptCarriersList.DataBind();
        }