Do I need to sanitize input from ASP.NET MembershipProvider controls?

I'm using various ASP.NET controls out of the box such as the CreateUserWizard control, Login control etc... For custom controls, I have sanitized my inputs by making sure they conform to expected values. However, is this required for the controls such as the CreateUserWizard control, or is that handled internally? Do I need to provide any extra server side validation to these controls and, if so, would it be best to do it in the "CreateUserWizardControl_CreatingUser" event? Thanks


If input is coming from any form, then treat it as suspect. I've included some links here that may help you:

If you have request validation enabled then form data with script tags will generate an error automatically.

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