RadDateTimePicker and invalid content

[Marco]

Hi,

When I enter some invalid data into a RadDateTimePicker, the field is marked as invalid (warning triangle and red border)- That's nice and fine.
But when I submit the form, however, the page is considered as valid (this.IsValid returns true) and the postback is executed.

How can I prevent the form to do a postback on invalid data?

Thanks in advance.

[Shinu]

Hello Macro,

One suggestion to achieve this is by adding RequiredFieldValidator on the page. Using this you can show a warning message and stop the submission of the form if a required field has no value. Set the ControltoValidate property of RequiredFieldValidator to ID of RadDatePicker,.

Please go through the following link to online demo.
Validation

Thanks,
Shinu.

[Marco]

Hello Shinu,

Thanks for your reply. Unfortunately, I cannot mark this field as required, because it is not a required value. Nevertheless, entering invalid data (user uses an invalid date format) has to mark the form as invalid and therefore supress the postback.

Regards.

[Maria Ilieva]

Hello Marco,

I would suggest you to review the following forum post in which a similar scenario is discussed and a possible approach with custom validators is provide.
I hope this helps

All the best,
Maria Ilieva
the Telerik team