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generate ID after click submit

Posted By:      Posted Date: September 07, 2010    Points: 0   Category :ASP.Net
hi all..!I create a webform to register new customer..In my form i have "ID" for customer.And i have database with table "CustomerDetails" with existing data..Existing data "ID" start from 300000 and already have data till 302000..Now i want to use the database to register new customer with "ID" 302001..and i want to generate ID when click "submit" button...this is my problem..i wanna generate ID after click submit..

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