security exception in asp.net
<p>while i am running my web application, i got the security exception like this what is that means how it comes can u tell details. thank u it is the eception </p>

<p>Exception Details: System.Security.SecurityException: Request for the permission of type 'System.Web.AspNetHostingPermission, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.</p>

<p><strong>Description of the  error is</strong></p>

<p>Description: The application attempted to perform an operation not allowed by the security policy.  To grant this application the required permission please contact your system administrator or change the application's trust level in the configuration file. </p>
