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Intercept manual refresh in inserting db action page

Posted By:      Posted Date: October 22, 2010    Points: 0   Category :ASP.Net

Hello...i have a e-commerce page which send data to last page for the payment...

In this last page, the user confirm his intention to acquire products .... In this moment, i've created a sub which insert a new order in the database...all works!...

The problem born when i try (and user could too) to manually refresh the page...the code will be processed again and a new (second) order will be inserted in the database.....it's not correct...

This page make a postback after confirm button....so control page.ispostback will not resolve problem...

How could i intercept manual refresh of this page in a secure way ?

Thanks to allUndecided

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