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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; }

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;
}

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

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