标题：[求助]添加可视化授权出错（已解决）

在管理项目中添加可视化授权出错，代码和截图如下，请各位老师帮助看看，谢谢！！

'可视化授权
For Each t As Table In Tables
    t.Visible = True
    t.AllowEdit = true
    For Each c As Col In t.Cols
        c.Visible = True
        c.AllowEdit = True
    Next
Next
Tables("授权表").Visible = (User.Type <> UserTypeEnum.User )
If User.Type = UserTypeEnum.User Then
    For Each dr As DataRow In DataTables("授权表").Select("分组名 = '" & _UserGroup & "'" )
        If dr.IsNull("列名") Then
            Tables(dr("表名")).Visible = Not dr("不可见")
            Tables(dr("表名")).AllowEdit = Not dr("不可编辑")
        Else
            Tables(dr("表名")).Cols(dr("列名")).Visible = Not dr("不可见")
            Tables(dr("表名")).Cols(dr("列名")).AllowEdit = Not dr("不可编辑")
        End If
    Next
End If

此主题相关图片如下：a.png

代码是添加到自定义用户登录窗口的"确定"按钮中。

谢谢狐爸老师，前段代码如下，上面的代码就贴在后面，按确定就出错，请狐爸老师帮助看看，谢谢！！

Dim UserName As String = e.Form.Controls("UserName").Value
Dim cmd As New SQLCommand
Dim dt As DataTable
Dim dr As DataRow
cmd.C
If UserName = ""  Then
    Messagebox.show("请选择用户!","提示",MessageBoxButtons.OK,MessageBoxIcon.Information)
    Return
End If
cmd.CommandText = "Select * From {Users} Where [Name] = '" & UserName & "'"
dt = cmd.ExecuteReader
dr = dt.DataRows(0)
If e.Form.Controls("PassWord").Value = dr("Password") Then
    _UserName = UserName
    _UserGroup = dr("Group")
    e.Form.Close
Else
    Messagebox.show("密码错误!","提示",MessageBoxButtons.OK,MessageBoxIcon.Information)
End If
'非开发隐藏表标题
If _UserGroup <> "开发" Then
    TableCaptionVisible = False
Else
    TableCaptionVisible = True
End If
'打开表返回最末行
With Tables("日报源表")
    .Position = .Rows.Count - 1
End With

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点击浏览该文件:管理项目120.zip

For Each dr As DataRow In DataTables("授权表").Select("分组名 = '" & _UserGroup & "'" )

改为：

For Each dr In DataTables("授权表").Select("分组名 = '" & _UserGroup & "'" )

理由参考：

http://www.foxtable.net/help/topics/1518.htm

你也是老革命了，这个错误很好解决嘛。

按照狐爸老师的方案，并把变量名改了重新定义，还是出错！代码和截图如下：

'可视化授权
For Each t As Table In Tables
    t.Visible = True
    t.AllowEdit = True
    For Each c As Col In t.Cols
        c.Visible = True
        c.AllowEdit = True
    Next
Next
Dim ds As DataRow
Tables("授权表").Visible = (User.Type <> UserTypeEnum.User )
If User.Type = UserTypeEnum.User Then
    For Each ds In DataTables("授权表").Select("分组名 = '" & _UserGroup & "'" )
        If ds.IsNull("列名") Then
            Tables(ds("表名")).Visible = Not ds("不可见")
            Tables(ds("表名")).AllowEdit = Not ds("不可编辑")
        Else
            Tables(ds("表名")).Cols(ds("列名")).Visible = Not ds("不可见")
            Tables(ds("表名")).Cols(ds("列名")).AllowEdit = Not ds("不可编辑")
        End If
    Next
End If