Java Script in Validation controls in asp.net

C开发者_高级运维an i give alert message box of javascript in errormessage property of required field validator in asp.net

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This reference page : ASP.Net Message Box Alert Display shows some help regarding how to show alert message using ASP.net.

I don't know weather this will solve your problem or not as this is not case of RequireFieldValidator. Correct me if I am wrong.

Thanking You.