Question

我已存储Procerdure名称出席记录表

right:0

我想从vb.net 2010组合框值传递@trainid参数 vb.net代码是：

ALTER proc [dbo].[Attendancesheet] (@trainid nvarchar (max))

as 
begin

declare @DyPQ as nvarchar (max)
declare @CN as nvarchar(max)
select @CN =ISNULL(@CN+',','')
+ QUOTENAME(lecturename)
FROM (SELECT DISTINCT lecturename FROM ATT where trainid=@trainid) as Lectures
--Print @CN

SET @DyPQ= N'
select * from
(
select (select trinsname from trains where trinsid=e.trinsid) as [TrainerNmae],
        lecturename,
        att_status
 from att e where (trainid=@trainid))as p
  pivot
 (
 max(Att_status) for lecturename in(' + @CN + '))as f'  

 execute (@DyPQ);
 end

Answer 1

您可以尝试以下代码：

Dim trainid As SqlParameter = cmd.Parameters.AddWithValue("@trainid", Me.cbotrainings.SelectedValue.ToString().Trim)

必须声明标量变量@trainid

1 个答案: