| Visual Basic (Declaration) | |
|---|---|
Protected Overridable Sub OnKeyPress( _ ByVal sender As Object, _ ByVal e As KeyPressEventArgs _ )  | |
| Visual Basic (Usage) |  Copy Code | 
|---|---|
Dim instance As DropDownEditor Dim sender As Object Dim e As KeyPressEventArgs instance.OnKeyPress(sender, e)  | |
| C# | |
|---|---|
protected virtual void OnKeyPress( object sender, KeyPressEventArgs e )  | |
Parameters
- sender
 - An System.Object value that indicates the event sender.
 - e
 - The System.Windows.Forms.KeyPressEventArgs instance that contains the event data.
 
Raising an event invokes the event handler through a delegate.
            
            
            
            
            The OnKeyPress 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 OnKeyPress in a derived class, be sure to call the base class's OnKeyPress method so that registered delegates receive the event.
Target Platforms: Windows 2000 Professional (SP4), Windows 2000 Server, Windows 2003 Server (SP1), Windows 2008, Windows XP (SP2), Windows Vista, Windows 7, Windows 8