Why do the mobile controls have to be re-created on every postback?

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k m - 26 Feb 2004 00:38 GMT

I am writing a test page to test the ability to create dynamic mobile
pages (see my code below). The code as I currently have it seems to
work in Pocket IE.

The code that generates the controls for Form1 is currently in the
Page_Load method. I have three questions:

1. Why does it not work to put that code inside of an if(!IsPostBack)
{} ?

2. Why does it not work to put that code in the Form1_OnActivate method
instead?

3. In the Openwave SDK 6.2.2 emulator, why do I get an error when
clicking on the calendar or the "ok" button? It says "error: malformed
server response"

thank you!

Test.aspx --
<%@ Register TagPrefix="mobile" Namespace="System.Web.UI.MobileControls"
Assembly="System.Web.Mobile" %>
<%@ Page language="c#" Codebehind="Test.aspx.cs" Inherits="Caps.Test"
AutoEventWireup="false" %>

<HEAD>
<meta name="GENERATOR" content="Microsoft Visual Studio .NET 7.1">
<meta name="CODE_LANGUAGE" content="C#">
<meta name="vs_targetSchema"
content="http://schemas.microsoft.com/Mobile/Page">
</HEAD>

<body Xmlns:mobile="http://schemas.microsoft.com/Mobile/WebForm">
<mobile:Form runat="server" ID="Form1"
OnActivate="Form1_OnActivate"></mobile:Form>
<mobile:Form runat="server" id="SecondForm"
OnActivate="SecondForm_OnActivate"></mobile:Form>
</body>

Test.aspx.cs --
using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.Mobile;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.MobileControls;
using System.Web.UI.HtmlControls;

namespace Caps
{
public class Test : System.Web.UI.MobileControls.MobilePage
{
protected System.Web.UI.MobileControls.Form Form1;
protected System.Web.UI.MobileControls.Form SecondForm;

private void Page_Load(object sender, System.EventArgs e)
{
Form1.Controls.Add(NewLabel("Label1", "Type in something:"));
Form1.Controls.Add(NewTextBox("TypeIn"));

Form1.Controls.Add(NewLabel("Label2", "Choose a date:"));
Form1.Controls.Add(NewCalendar("Calendar"));

Form1.Controls.Add(NewCommand(new
System.EventHandler(this.GoCommand_OnClick), "OK", "Command1"));
}

protected void GoCommand_OnClick(Object sender, System.EventArgs e)
{
ActiveForm = SecondForm;
}

protected void Form1_OnActivate(Object sender, EventArgs e)
{
}

protected void SecondForm_OnActivate(Object sender, EventArgs e)
{
TextBox oTypeIn = (TextBox) FindControl("TypeIn");
Calendar oCalendar = (Calendar) FindControl("Calendar");

SecondForm.Controls.Add(NewLabel("a", "You Selected:"));
SecondForm.Controls.Add(NewLabel("b", "TypeIn: " + oTypeIn.Text));
SecondForm.Controls.Add(NewLabel("c", "Date: " +
oCalendar.SelectedDate.ToString()));
}

protected Command NewCommand(System.EventHandler oOnClick, string
strText, string strID)
{
Command oCommand = new Command();
oCommand.Click += oOnClick;
oCommand.Text = strText;
oCommand.ID = strID;
return oCommand;
}

protected Label NewLabel(string strID, string strText)
{
Label oLabel = new Label();
oLabel.ID = strID;
oLabel.Text = strText;
return oLabel;
}

protected TextBox NewTextBox(string strID)
{
TextBox oTextBox = new TextBox();
oTextBox.ID = strID;
return oTextBox;
}

protected Calendar NewCalendar(string strID)
{
Calendar oCalendar = new Calendar();
oCalendar.ID = strID;
return oCalendar;
}

#region Web Form Designer generated code
override protected void OnInit(EventArgs e)
{
//
// CODEGEN: This call is required by the ASP.NET Web Form
Designer.
//
InitializeComponent();
base.OnInit(e);
}

/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.Load += new System.EventHandler(this.Page_Load);

}
#endregion
}
}

Reply to this Message

DotNetJunkies User - 14 Jul 2004 10:02 GMT

I have the same problem.

Try the follow steps

open the openwave simulator

1) Select Tools -> Options
2) Click on the Server Tab
3) Click Add
4) A dialog will come up asking if you want to use HTTP Direct Select Yes
5) Give the profile a name (apache)
6) Click OK
7) Select the profie you just created and click The Edit button
8) Uncheck the HTTP Direct box and put 127.0.0.1 in the Gateway field
9) Click Ok
10) Select your new profile and click Activate

---

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Why do the mobile controls have to be re-created on every postback?

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