Can ASP.NET validation controls display an exclamation point with tooltip message?

Can the standard ASP.NET Visual Studio validation controls d开发者_如何学编程isplay an icon with a tool tip message instead of text, the way the WinForms ErrorProvider controls work?

If not, is the AjaxToolkit's ValidatorCallout control the best approach? Is this control flakey?

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Here is what you need, already covered. http://www.codeproject.com/KB/validation/RequiredTextBox.aspx