ViewState and Server.Transfer Best practices

ViewState and Server.Transfer Best practices Scenario :

 Server.Transfer("destiny.aspx",true); 

Above statement will cause ViewState is invalid exception Reason : By default EnableViewStateMac is set to true, and hence on every page life cycle , it tries to validate the value of the ViewState(for security reason) ,which is a part of forms collection(__ViewState - hidden field) and by ViewState design at any given point you can post to only one form...Hence in the prior case , it tries to compare the ViewState of the source with the destiny and hence the above mismatch happens :) Best practices to Transfer the control to the other page without affecting the view state Option 1 use

Server.Transfer("destiny.aspx",false);

- The Second parameter in the above statement is set to false , Hence it is not preserving the prvious page folrms collections.. Option 2 Passing Server control value between pages http://msdn2.microsoft.com/en-us/library/6c3yckfw(vs.71).aspx I hope this helps!. Regards, -Vinayak