How can I update multiple rows in table using a single form button and checkboxes

i have project visitors can select multiple productos , once click on purchas button updates selected records.

you have not mentioned programming language using, here's link if using asp.

 

http://csharpdotnetfreak.blogspot.com/2009/05/edit-multiple-records-gridview-checkbox.html

 

also, have @ discussion thread

 

http://forums.asp.net/t/1470882.aspx

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