protected void Call2_Click(object sender, EventArgs e)
    {
        string fXml = @"<?xml version='1.0'?>
        <DOCUMENTDATA>
        <DOCUMENTINFO>
            <InvoNo>Danny Here !!22</InvoNo>
        </DOCUMENTINFO>
        </DOCUMENTDATA>
        ";

        Rinnai.AutoIm SendWS = new Rinnai.AutoIm();
        Label2.Text = SendWS.HelloWorld(fXml).ToString();
    }
 protected void Call1_Click(object sender, EventArgs e)
 {
     Rinnai.AutoIm SendWS = new Rinnai.AutoIm();
     Label1.Text = SendWS.HelloWorld("123").ToString();
 }