KeyEventArgs.IsUp Property

Reference

Definition

Namespace:: System.Windows.Input

Assembly:: PresentationCore.dll

Important

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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.

Applies to

Produkt	Verzie
.NET Framework	3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
Windows Desktop	3.0, 3.1, 5, 6, 7, 8, 9, 10

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