KeyEventArgs.IsUp Property

Definition

Namespace:

System.Windows.Input

Assembly:

PresentationCore.dll

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

public:
 property bool IsUp { bool get(); };

public bool IsUp { get; }

member this.IsUp : bool

Public ReadOnly Property IsUp As Boolean

Property Value

Boolean

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

Examples

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;
}

' e is an instance of KeyEventArgs.
' btnIsUp is a Button.
If e.IsUp Then
    btnIsUp.Background = Brushes.Red

Remarks

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.

See also

• KeyEventHandler
• KeyboardEventArgs
• KeyboardEventHandler