Code Explanation

This code is part of an ASP.NET Web Forms page. It defines a class named _Default that inherits from System.Web.UI.Page, which means it controls the behavior of the web page.

• Page Load Event:
  The method _Default_Load runs when the page is first loaded. It sets the value of a text input (with ID Text1) to "123....".
• Button Click Event:
  The method Button1_ServerClick runs when a button (with ID Button1) is clicked. It changes the value of the same text input to "123456......".

This example tells how server-side events in ASP.NET can dynamically update form elements using VB.NET. Please click the code link to view how the code is working.
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