像这样的例子，我如何用正则表达式判断 AddInput输入框的值？如果不正确就不能点确定，并提示错误？
    Case "test.htm"
        Dim wb As New weui
        wb.AddForm("","form1","test.htm")
        With wb.AddInputGroup("form1","ipg1","登录")
            .AddInput("xm","户名","text")
            .AddInput("pw","密码","password")
        End With
        With wb.AddButtonGroup("form1","btg1",True)
            .Add("btn1", "确定", "submit")
        End With
        e.WriteString(wb.Build) \'生成网页
End Select

或：http://www.foxtable.com/mobilehelp/topics/0104.htm