Returns or sets the action to take in response to the failed validation. By default the property is set to null and the control will display a message box to obtain the action from the end user. If the property is set to a non-null value, that action will be used and the message box will not be displayed.

Returns a boolean indicating whether the cell is allowed to stay in edit mode.

Returns the cell for which the control has entered edit mode.

Returns the rule which failed validation.