存储过程

-- =============================================
-- Create date: <2012-9-12>
-- Description:    <高效分页存储过程，适用于Sql2005>
-- Notes:        <排序字段强烈建议建索引>
-- sosoft.cnblogs.com
-- =============================================
create Procedure [dbo].[Page] 
 @TableName varchar(50),        --表名
 @Fields varchar(1000) = '*',    --字段名(全部字段为*)
 @OrderField varchar(1000),        --排序字段(必须!支持多字段)
 @sqlWhere varchar(1000) = Null,--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
 @TotalPage int output            --返回总页数
as
begin

    Begin Tran --开始事务

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

    --计算总记录数
         
    if (@SqlWhere='' or @sqlWhere=NULL)
        set @sql = 'select @totalRecord = count(*) from ' + @TableName
    else
        set @sql = 'select @totalRecord = count(*) from ' + @TableName + ' where ' + @sqlWhere

    EXEC sp_executesql @sql,N'@totalRecord int OUTPUT',@totalRecord OUTPUT--计算总记录数       
    
    --计算总数量
    select @TotalPage=@totalRecord--CEILING((@totalRecord+0.0)/@PageSize)+1

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

     --处理开始点和结束点
    Declare @StartRecord int
    Declare @EndRecord int
    
    set @StartRecord = (@pageIndex-1)*@PageSize + 1
    set @EndRecord = @StartRecord + @pageSize - 1

    --继续合成sql语句
    set @Sql = @Sql + ') as ' + @TableName + ' where rowId between ' + Convert(varchar(50),@StartRecord) + ' and ' +  Convert(varchar(50),@EndRecord)
    --print @Sql
    Exec(@Sql)

--    print @totalRecord 
    If @@Error <> 0
      Begin
        RollBack Tran
        Return -1
      End
     Else
      Begin
        Commit Tran
        --print @totalRecord 
        Return @totalRecord ---返回记录总数
        
        
      End   
    
end

下面是C#函数代码

#region 获取分页的数据
        /// <summary>
        /// 获取分页的数据
        /// </summary>
        /// <param name="TblName">数据表名</param>
        /// <param name="Fields">要读取的字段</param>
        /// <param name="OrderField">排序字段</param>
        /// <param name="SqlWhere">查询条件</param>
        /// <param name="PageSize">每页显示多少条数据</param>
        /// <param name="pageIndex">当前页码</param>
        /// <param name="TotalPage">返回值，共有多少页</param>
        /// <returns></returns>
        /// sosoft.cnblogs.com


        public static DataSet PageData(string TblName, string Fields, string OrderField, string SqlWhere, int PageSize, int pageIndex, out int TotalPage)
        {
           
            TotalPage = 1;
            DbObject db = new DbObject();

            string connString = db.ConnectionString;

            SqlConnection conn = new SqlConnection(connString);
            SqlCommand comm = new SqlCommand("Page", conn);

            comm.Parameters.Add(new SqlParameter("@TableName", SqlDbType.NVarChar, 100));
            comm.Parameters[0].Value = TblName;

            comm.Parameters.Add(new SqlParameter("@Fields", SqlDbType.NVarChar, 1000));
            comm.Parameters[1].Value = Fields;

            comm.Parameters.Add(new SqlParameter("@OrderField", SqlDbType.NVarChar, 1000));
            comm.Parameters[2].Value = OrderField;

            comm.Parameters.Add(new SqlParameter("@sqlWhere", SqlDbType.NVarChar, 1000));
            comm.Parameters[3].Value = SqlWhere;

            comm.Parameters.Add(new SqlParameter("@pageSize", SqlDbType.Int));
            comm.Parameters[4].Value = PageSize;

            comm.Parameters.Add(new SqlParameter("@pageIndex", SqlDbType.Int));
            comm.Parameters[5].Value = pageIndex;


            comm.Parameters.Add(new SqlParameter("@TotalPage", SqlDbType.Int));
            comm.Parameters[6].Direction = ParameterDirection.Output;


            comm.CommandType = CommandType.StoredProcedure;
            SqlDataAdapter dataAdapter = new SqlDataAdapter(comm);
            DataSet ds = new DataSet();
            dataAdapter.Fill(ds);
            TotalPage = (int)comm.Parameters[6].Value;           

            conn.Close();
            conn.Dispose();
            comm.Dispose();
            db.Dispose();
            return ds;
        }
        #endregion