KeyEventArgs.IsUp Property


Gets a value that indicates whether the key referenced by the event is in the up state.

Namespace:   System.Windows.Input
Assembly:  PresentationCore (in PresentationCore.dll)

public bool IsUp { get; }

Property Value

Type: System.Boolean

true if the key is up; otherwise, false. There is no default value.

The Keyboard class also provides information about the state of the keys on the keyboard. For instance, the IsKeyUp method returns whether a specified is up.

The following example checks whether the key associated with an instance of KeyEventArgs is up by obtaining the state of the IsUp property.

// e is an instance of KeyEventArgs.
// btnIsUp is a Button.
if (e.IsUp)
    btnIsUp.Background = Brushes.Red;

.NET Framework
Available since 3.0
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