主题：[求助]代码不起作用

Dim drp As WinForm.DropDownBox = e.Form.Controls("DropBox1")

If drp.DroppedDown Then '如果下拉窗口已经打开
    Dim tbl As Table = Tables("窗口3_Table1")
    If drp.Text = "" Then '如果内容为空
        tbl.Filter = "" '显示所有客户

MessageBox.Show(tbl.Filter)
    Else '否则根据输入内容进行模糊筛选
        Dim txt As String = "'%" & drp.Text & "%'"
        tbl.Filter = "客户编号 Like " & txt & " Or 客户名称 Like " & txt & " Or 地址 Like " & txt & " Or 联系人 Like " & txt

MessageBox.Show(tbl.Filter)

    End If
End If

看看显示什么