Often we see that after executing a functionality by a button click (through posting a form to server), when we click on browser refresh button then a pop up re-sending previous page information to server shows and after clicking resend (retry in IE) that particular functionality re-executed i.e reinsertion occurs in database or some other functionality that previously had been done.
Programming Tutorials And Source Code - ASP.NET,C#.NET,MVC,JQuery,JavaScript,SQL Server,Angular,WCF examples