Web Forms :: Want Tocompare A User-enteredvalue Ona Web Formagainst An Array Of Existing Values From The Database

Apr 7, 2010

I want to compare a user-entered value on a Web form against an array of existing values from the database, and do so on blur. If match, then show error. Scenario is to stop user from needlessly filling out other fields if this record has already been entered.

how to trigger this? What parts are client-side, what parts are server-side? Can I do it without Javascript?

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