From http://www.w3schools.com (Copyright Refsnes Data)

.NET Mobile Events

Mobile Controls exposes device independent programmable events.

Programming Events

Mobile controls have an object model with programmable properties, methods and events.

For a complete overview please refer to the reference section.

Submitting Text

This page has two forms:

<%@ Page
Inherits=
"System.Web.UI.MobileControls.MobilePage"%>
<%@ Register
TagPrefix="Mobile"
Namespace="System.Web.UI.MobileControls"
Assembly="System.Web.Mobile" %>

<script runat="server">
Dim age

Sub AgeClick(sender As Object, e As EventArgs)
age=text1.Text
ActiveForm=Form2
End Sub

Sub Form2_Activate(sender As Object,e As EventArgs)
  message.Text="You are " & age & " years old"
End Sub

</script>

<Mobile:Form id="form1" runat="server">
<Mobile:Label runat="server">Age?</Mobile:Label>
<Mobile:TextBox runat="server" id="text1" />
<Mobile:Command runat="server" OnClick="AgeClick" Text="Submit" />
</Mobile:Form>

<Mobile:Form id="form2" runat="server" OnActivate="Form2_Activate">
<Mobile:Label runat="server" id="message" />
</Mobile:Form>

When a page has two forms, the first form is always opened by default.

The first form has a label with the text "Age?", an input box to input the age, and a submit button.

The second page is activated by the submit button on the first page, and displays a response.

When the application runs on a mobile device, the two pages will display like this:

Form 1

Age?

Form 2

You are 11 years old