Control.OnKeyDown Method (KeyEventArgs)

 

Raises the KeyDown event.

Namespace:   System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)

abstract OnKeyDown : 
        e:KeyEventArgs -> unit
override OnKeyDown : 
        e:KeyEventArgs -> unit

Parameters

e
Type: System.Windows.Forms.KeyEventArgs

A KeyEventArgs that contains the event data.

Raising an event invokes the event handler through a delegate. For more information, see Handling and Raising Events.

The OnKeyDown 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 OnKeyDown in a derived class, be sure to call the base class's OnKeyDown method so that registered delegates receive the event.

The following code example uses the KeyDown event to determine the type of character entered into the control.

No code example is currently available or this language may not be supported.

.NET Framework
Available since 1.1
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