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Asked: 2026-05-10T16:32:49+00:00

What do you use to validate an email address on a ASP.NET form. I

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What do you use to validate an email address on a ASP.NET form. I want to make sure that it contains no XSS exploits.

This is ASP.NET 1.1

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  1. Any script tags posted on an ASP.NET web form will cause your site to throw and unhandled exception.

    You can use a asp regex validator to confirm input, just ensure you wrap your code behind method with a if(IsValid) clause in case your javascript is bypassed. If your client javascript is bypassed and script tags are posted to your asp.net form, asp.net will throw a unhandled exception.

    You can use something like:

    <asp:RegularExpressionValidator ID='regexEmailValid' runat='server' ValidationExpression='\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*' ControlToValidate='tbEmail' ErrorMessage='Invalid Email Format'></asp:RegularExpressionValidator>
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