万能asp.net分页

CREATE PROCEDURE P_newpager @tblname VARCHAR(255), -- 表名 @strGetFields nvarchar(1000) = "*", -- 需要返回的列 @fldName varchar(255)='', -- 排序的字段名 @PageSize int = 10, -- 页尺寸 @PageIndex int = 1, -- 页码 @doCount bit = 0, -- 返回, 非0 值则返回记录总数 @OrderType bit = 0, -- 设置排序类型, 非0 值则降序 @strWhere varchar(1500) = '' -- 查询条件(注意: 不要加where) AS declare @strSQL varchar(5000) -- 主语句 declare @strTmp varchar(110) -- 临时变量 declare @strOrder varchar(400) -- 排序类型 if @doCount != 0 begin if @strWhere !='' set @strSQL = 'select count(*) as Total from [' + @tblName + '] where 1=1 '+ @strWhere else set @strSQL = 'select count(*) as Total from [' + @tblName + ']' end --以上代码的意思是如果@doCount传递过来的不是，就执行总数统计。以下的所有代码都是@doCount为的情况： else begin if @OrderType != 0--降序 begin set @strTmp = '<(select min' set @strOrder = ' order by [' + @fldName +'] desc'--如果@OrderType不是0，就执行降序，这句很重要！ end else begin set @strTmp = '>(select max' set @strOrder = ' order by [' + @fldName +'] asc' end if @PageIndex = 1 begin if @strWhere != '' set @strSQL = 'select top ' + str(@PageSize) +' ' + @strGetFields + ' from [' + @tblName + '] where 1=1 ' + @strWhere + ' ' + @strOrder else set @strSQL = 'select top ' + str(@PageSize) +' ' + @strGetFields + ' from [' + @tblName + '] ' + @strOrder--如果是第一页就执行以上代码，这样会加快执行速度 end else begin--以下代码赋予了@strSQL以真正执行的SQL代码 set @strSQL = 'select top ' + str(@PageSize) + ' ' + @strGetFields + ' from [' + @tblName + '] where [' + @fldName + ']' + @strTmp + '(['+ @fldName + ']) from (select top ' + str((@PageIndex-1)*@PageSize) + ' [' + @fldName + '] from [' + @tblName + ']' + @strOrder + ') as tblTmp)' + @strOrder if @strWhere != '' set @strSQL = 'select top ' + str(@PageSize) +' '+@strGetFields+ ' from [' + @tblName + '] where [' + @fldName + ']' + @strTmp + '([' + @fldName + ']) from (select top ' + str((@PageIndex-1)*@PageSize) + ' [' + @fldName + '] from [' + @tblName + '] where 1=1 ' + @strWhere + ' ' + @strOrder + ') as tblTmp) and 1=1 ' + @strWhere + ' ' + @strOrder end if @strWhere !='' --得到记录的总行数 set @strSQL =@strSQL+ '; select count(*) as Total from [' + @tblName + '] where 1=1 '+ @strWhere else set @strSQL =@strSQL+ '; select count(*) as Total from [' + @tblName + ']' end exec (@strSQL) RETURN