KeyEventArgs.IsDown Property

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

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

public bool IsDown { get; }
Members of this class are either not typically used in XAML, or cannot be used in XAML.

Property Value

Type: System.Boolean
true if the key is down; otherwise, false.

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

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

// e is an instance of KeyEventArgs. 
// btnIsDown is a Button. 
if (e.IsDown)
{
    btnIsDown.Background = Brushes.Red;
}

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0
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