editable gridview problem

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ASP.NET

Gridview

i'm making a web page using aspx, what i want is to add into a gridview about a thousand records (from a query), then i want those records to be editable, i add a column in which i add a command field, then i put in every cell of that column the word edit, which makes the row editable , but when i update a record the page always reload, which makes it VERY SLOW, is there a faster way to do this?

Thanks a lot