Why are my web forms getting a Time Out Expired error when I submit the form

Development Visual Studio Web Forms
1

Web forms are session-based, and these sessions are automatically recycled by IIS every 20 minutes by default. To prevent losing your data, you should add the following code to your web forms code-behind’s page constructor method:

C#

Examplepublic partial class _Default : WorkflowPage {  public _Default() : base()  {    IsSimpleMode = true;    IsSessionLess = true;  }}

VB.NET

ExamplePublic Class _Default    Inherits WorkflowPage        Public Sub New()        MyBase.New        IsSimpleMode = true        IsSessionLess = true    End SubEnd Class