Disable the Back button of browser While server side code is processing.

[EBS.VivekGupta]

Hi, I am working over a ASP .NET application and SQL server database. The databases i m using is huge and takes time while updating or generating report by my ASP .NET application.
As the reporting and updating require some calculation, if the user presses ESC button or Back button of browser the data is partially updated in the database.
I got the way to disable ESC key but I am not able to disable the back button while processing. Please help me out.

[sufyan2011]

http://www.htmlgoodies.com/tutorials/buttons/article.php/3478911/Disabling-the-Back-Button.htm

http://viralpatel.net/blogs/2009/11/disable-back-button-browser-javascript.html

[EBS.VivekGupta]

Thanks for the reply, out of all of the mentioned techniques I like opening the new window because all other techniques may not redirect the page to previous page but stops the current processing.