title: Cancel long running IFRAMEs
body: <p>I have an ASP.NET WebForm application - a main page that hosts a bunch of IFRAME "widgets". When main page loads - the widgets' pages load as well and begin their own processing, which include connecting to SQL Server to run stored procedures.</p>
  
  <p>What would be the best way to cancel those IFRAME processing should user need to do so? I could probably set their SRC to another/blank page from client-side thus canceling the request, but if the IFRAME pages already called SQL Server - how do I cancel the SQL processing as well?</p>
  
  <p>EDIT: To clarify the slowest point in the IFRAMEd page is the SQL Server stored procedure call, so essentially this boils down to - can I initiate cancellation of the SQL command from client?</p>