I'm using a wizard containing several pages of textboxes.
Each textbox uses TextBoxWatermarkExtender extension displaying a short description of each field.
The final field/textbox is for the __optional__ entry of an email address and txtEmail.Textmode="Email".
If TextBoxWatermarkExtender extension is attached, the textbox seems to be validating the watermark when the navigation buttons are clicked on the wizard when no text is entered into the textbox. This effectively makes the email field mandatory.
Each textbox uses TextBoxWatermarkExtender extension displaying a short description of each field.
The final field/textbox is for the __optional__ entry of an email address and txtEmail.Textmode="Email".
If TextBoxWatermarkExtender extension is attached, the textbox seems to be validating the watermark when the navigation buttons are clicked on the wizard when no text is entered into the textbox. This effectively makes the email field mandatory.