Question

我正在尝试从两个表格中显示gridview中的详细信息，登录名是树状结构，Admin，Manager，User

一个表是Maintenanceinfo，另一个表是UserDetails

以下是我的代码：

Private Sub fillgrid()
        dt1 = Now.Year

        If Convert.ToString(Session("userType")).ToLower() = "admin" Then
            cmd.CommandText = "select sno, (SELECT UserName FROM UserDetails WHERE userid=Maintenanceinfo.userid) AS userid, Maintenance, January, February, March, April, May, June, July, August, September, October, November, December from Maintenanceinfo where year = " & dt1 & ""
        ElseIf Convert.ToString(Session("userType")).ToLower() = "manager" Then
            cmd.CommandText = "select sno, (SELECT UserName FROM UserDetails WHERE userid=Maintenanceinfo.userid) AS userid, Maintenance, January, February, March, April, May, June, July, August, September, October, November, December from Maintenanceinfo a,UserDetails b where a.userid=b.userid and b.Managerid= " & Session("userId") & " and year = " & dt1 & " "
        Else
            cmd.CommandText = "select sno, (SELECT UserName FROM UserDetails WHERE userid=Maintenanceinfo.userid) AS userid, Maintenance, January, February, March, April, May, June, July, August, September, October, November, December from Maintenanceinfo with (nolock) where userid= " & Session("userId") & " and year = " & dt1 & ""
        End If

        da = New SqlDataAdapter(cmd.CommandText, Con)
        da.Fill(ds, "info")
        Me.GridView1.DataSource = ds.Tables("info")

        GridView1.DataBind()
        '  cmd.CommandText = "select isnull(count(*),0) from DM_Memberinfo m inner join DM_Dln d on m.memberid=d.dlnmemid where d.memberid=" & Session("uname") & " "
    End Sub

当尝试以“admin”和“user”身份登录时，代码工作正常，但在尝试以“管理员”身份登录时，它无法正常工作并且无法找到“Maintenanceinfo.userid”

欣赏是否有人可以帮助我

谢谢

Answer 1

对于经理部分，您已为Maintenanceinfo表定义了别名。所以你应该使用它或删除别名：

    select sno, (SELECT UserName FROM UserDetails WHERE userid=a.userid) 
AS userid, Maintenance, January, February, March, April, May, June, July, August, 
September, October, November, December from Maintenanceinfo a,UserDetails b 
where a.userid=b.userid and b.Managerid= " & Session("userId") & " 
and year = " & dt1 & " "

找不到多部分标识符“Maintenanceinfo.userid”

1 个答案: