逻辑列的排他式选择

假定表中有四个逻辑列，要求每行只能选中一个，例如选中选项A，会自动去掉选项B、选项C和选项D的选中标记。

要实现此目的，只需将表的DataColchanging事件代码设置为：

Select Case e.DataCol.Name
    Case "选项A","选项B","选项C","选项D"
        If e.NewValue = True Then
            Dim nms() As String = {"选项A","选项B","选项C","选项D"}
            For Each nm As String In nms
                If nm <> e.DataCol.Name AndAlso e.DataRow(nm) = True Then
                    e.DataRow(nm) = False
                End If
            Next
        End If
End Select