主题：提问中学习

在行政区域表，窗口TreeView1控件的NodeMouseDoubleClick事件中

If e.Node.Level = 0 Then  '如果是顶层节点
    Return '则返回
End If
Dim Vals() As String = e.Node.FullPath.Split("\")
Dim Filter As String = "[省市] = '" & Vals(0) & "' And [县市] = '" & Vals(1) & "'"
Dim dr As DataRow = DataTables("行政区域").Find(Filter)
Dim r As Row = Tables("客户资料").Current
r("省市") = dr("省市")
r("县市") = dr("县市")
r("区号") = dr("区号")
r("邮编") = dr("邮编")
e.Form.Close()