ASP.NET 4 Unleashed

Using the ValidationSummary Control

The ValidationSummary control enables you to display a list of all the validation errors in a page in one location. This control is particularly useful when working with large forms. If a user enters the wrong value for a form field located toward the end of the page, the user might never see the error message. If you use the ValidationSummary control, however, you can always display a list of errors at the top of the form.

Each of the validation controls includes an ErrorMessage property. We have not been using the ErrorMessage property to represent the validation error message. Instead, we have used the Text property.

The distinction between the ErrorMessage and Text property is that any message that you ...