RegularExpressionValidator::EvaluateIsValid Method ()
Indicates whether the value in the input control is valid.
Assembly: System.Web (in System.Web.dll)
Return Value
Type: System::Booleantrue if the value in the input control is valid; otherwise, false.
The following code example demonstrates how to override the EvaluateIsValid method in a custom server control so that it always checks the value against the expression for a match in a RegularExpressionValidator.
Security Note
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This example has a text box that accepts user input, which is a potential security threat. By default, ASP.NET Web pages validate that user input does not include script or HTML elements. For more information, see Script Exploits Overview. |
The following code example demonstrates how to use the CustomRegularExpressionValidatorEvaluateIsValid control, defined in the preceding example, on a Web Forms page.
Available since 1.1
