SQL server存储过程取不出值

 ALTER Proc [dbo].[sp_pages]
(
  @Sql varchar(max) ,
  @Order varchar(4000) ,
  @CurrentPage int ,
  @PageSize int,
  @TotalCount int output
)
As
/*Andy 2012-2-28 */
Declare @Exec_sql nvarchar(max)
Declare @Exec_sql2 nvarchar(max)

Set @Exec_sql='Set @TotalCount=(Select Count(1) From ('+@Sql+') As a)'
Exec sp_executesql @Exec_sql2,N'@TotalCount int output',@TotalCount output

Set @Order=isnull(' Order by '+nullif(@Order,''),' Order By getdate()')

if @CurrentPage=1 /*经常会调用第1页，这里做特殊处理，少一层子查询*/
    Set @Exec_sql='
    ;With CTE_Exec As
    (
        '+@Sql+'
    )
    Select Top(@pagesize) *,row_number() Over('+@Order+') As r From CTE_Exec Order By r
    ' 
Else
    Set @Exec_sql='
    ;With CTE_Exec As
    (
        Select *,row_number() Over('+@Order+') As r From ('+@Sql+') As a 
    )
    Select * From CTE_Exec Where r Between (@CurrentPage-1)*@pagesize+1 And @CurrentPage*@pagesize Order By r
    '


Exec sp_executesql @Exec_sql,N'@CurrentPage int,@PageSize int',@CurrentPage,@PageSize

Cmd.Parameters("@TotalCount").value 取不到值，因为这里有二个
Exec sp_executesql 求方法，如果把最后的Exec sp_executesql 删掉，把上面的放下来就行。

放成单条的sql语句才好调试。

@Sql没有赋值吧，在查询totalCount的时候

Set @Exec_sql='Set @TotalCount=(Select Count(1) From ('+@Sql+') As a)'
这句话有问题吧 是不是应该是
Set @Exec_sql='Set ' + @TotalCount + '=(Select Count(1) From ('+@Sql+') As a)'

放成单条的sql语句才好调试。