DataGridView.OnValidating(CancelEventArgs) Method

Reference

Definition

Namespace:: System.Windows.Forms

Assembly:: System.Windows.Forms.dll

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 -> unit

Protected Overrides Sub OnValidating (e As CancelEventArgs)

Parameters

e: CancelEventArgs

A CancelEventArgs that contains the event data.

Exceptions

Exception

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.

Applies to