AJAX :: Reruired Validation Control Not Visible In Tab Panel

Feb 22, 2010

I have added a Ajax tab control into my page and first tab includes the data entry part to a table and second tab is update the data in a table (Database).

The problem is in first time when I click submit button without filling any details it shows the error messages (I set required fied validators) but next time it didn't show the error message but it not submit the page. So I understood that the validation controls are worked but it doesn't show the error message. Is there any solution?

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[Code] ....

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