On Exception/Success time move Success or Error Message page in share point 2010

• Add the following Namespace.
   
  • using Microsoft.SharePoint.Utilities;
    
• Replace the code for btnSuccess_Click event with the following
  SPUtility.TransferToSuccessPage("Operation Completed Successfully");
   
• Replace the code for btnError_Click event with the following
  or 

       Try - Catch Exception
       Exception ex = new Exception("Operation Failed - Contact to Your Administrator.");
       SPUtility.TransferToErrorPage(ex.Message);
 

• Build and deploy the solution.