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 all
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