DataGridView.OnValidating(CancelEventArgs) Method
Definition
Important
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Raises the Validating event.
protected:
override void OnValidating(System::ComponentModel::CancelEventArgs ^ e);protected override void OnValidating (System.ComponentModel.CancelEventArgs e);override this.OnValidating : System.ComponentModel.CancelEventArgs -> unitProtected Overrides Sub OnValidating (e As CancelEventArgs)Parameters
A CancelEventArgs that contains the event data.
Exceptions
Validation failed and either there is no handler for the DataError event or the handler has set the ThrowException property to true. The exception object can typically be cast to type FormatException.
Remarks
In addition to raising the Validating event, this method ends the current cell edit and validates the cell and row values.
Raising an event invokes the event handler through a delegate. For more information, see Handling and Raising Events.
The OnValidating method also allows derived classes to handle the event without attaching a delegate. This is the preferred technique for handling the event in a derived class.
Notes to Inheritors
When overriding OnValidating(CancelEventArgs) in a derived class, be sure to call the base class's OnValidating(CancelEventArgs) method so that registered delegates receive the event.
