Can i set Session Expire time

Yup....
It is possible by adding the below configuration in your Web.Config file.

<system.web>
    <sessionstate mode="InProc" timeout="1" />
</system.web>

here you can change the timeout value..

even you can simply set timeout at the default.aspx page load by writing

//u can set timeout value as you wish however the time here is in miliseconds
Session.Timeout=30000

which renews session every time the default page loads

Hi,

You can set the session timeout by various ways.

1. Using C#
2. Using jqyery
3. Using Ajax

Here are some links that can help you in finding the various ways.
session timeout using jquery
Sesion timeout using Ajax
Session timeout using C#
Some more links:
Session timeout on a asp.net with master pages
Session Timeout Warning in ASP.NET

Thanks

<configuration>
  <system.web>
     <sessionState timeout="20"></sessionState>
  </system.web>
</configuration>

Default session time is 20 mins


change Web.Config to

<configuration>
  <system.web>
    <sessionState mode="InProc" cookieless="true" timeout="30" />
  </system.web>
</configuration>