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Posted by / 29-Oct-2017 01:42

Rowvalidating telerik

The Row Validating event can be used the same way to prevent the user from exiting the current row.

However, the editor will be closed in this case and the value will be committed to the underlying data source.

Validation with Rad Grid View for Win Forms In this video you will learn how to use the event-based Validation functionality in Rad Grid View for Win Forms.

Learn how to use the Cell Validating and Row Validating events to ensure user input is valid.

Note that only the Cell Validating event can keep the editor active,when the validation fails and it does not allow the user to exit the cell until a valid value is filled.

Cell Validated: Fires after the cell has finished validating. Row Validated: Fires after a row has finished validating. When the validation fails, the editor is closed, but the user cannot change the current row in the grid until a valid cell value is entered.In this situation the editor is not kept active when the validation fails and pressing the Esc key does not revert the changes as the editor is already closed.Canceling this event prevents the user from exiting the cell until a valid value is entered or the edit process is canceled (via Esc key).The Data Bound Item will be updated only if the cell is validated.

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This funtionality can be easily implemented by handling the Preview Key Down event, which will revert the row changes after pressing the Esc key.

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