Validating date in asp net holiday dating challenge

We will use the Custom Validator control for this purpose.Just like we attached the Required Field Validator control to the Text Box, attach a Custom Validator to the Contact Name column. If you run the web form and try entering wrong value in the Contact Name column then you will see the error message displayed as before and the value will not be accepted by the Grid View control.

Add Grid View1_Row Updating event handler as shown below: The Row Updating event handler receives an event argument of type Grid View Update Event Args.This tells Grid View that the event handler should be cancelled.The New Values collection is read/write collection and in the second if condition we set the Country to India. You will find that the data is not accepted by the Grid View.Set the Control To Validate property of Required Field Validator control to Text Box1 (i.e. Also, set its Error Message property to "Please enter company name".Note that by default all validation controls validate on the client side.

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