Am using VisualStudio.Net to create ASP.Net pages. The validator is supposed to compare the InitialValue with the value of the text box it is validating when you tab to the next field. The ErrorMessage is supposed to display where the validator is if the Text property is not used. The initial value is supposed to be set to an empty string and I assume the text field value is too, so that if there is no [required] entry, then there is an error. But it does nothing when I am testing within Visual Studio running under Debug. Could it be that the initial value of the text field is null telling the validator that there is a change from an empty string? Or could it be that testing under Visual Studio does not use the control's validation as it would if tested in another way? Thanks for your ideas.

What is the HTML for the page? A required field validator simply checks if there is text in the textbox, if not, it will display the message. If you have an initial value in the textbox, and what to see if it has changed, the requiredfieldvalidator will not work.

Reply to own question:
According to the knowledge base it compares the text property to the initial value in the validator just to make sure they are different after an entry is made.
P.S. How do you keep e-mails from coming to you about every new question that appears in the forum?

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