Keyboard.IsKeyUp(Key) Method

Reference

Definition

Namespace:: System.Windows.Input

Assembly:: PresentationCore.dll

Important

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Determines whether the specified key is released.

public:
 static bool IsKeyUp(System::Windows::Input::Key key);

public static bool IsKeyUp (System.Windows.Input.Key key);

static member IsKeyUp : System.Windows.Input.Key -> bool

Public Shared Function IsKeyUp (key As Key) As Boolean

Parameters

key: Key

The key to check.

Returns

Boolean

true if key is in the up state; otherwise, false.

Examples

The following example shows how to use the IsKeyUp method to determine the state of a specific key. The Return key is passed to the IsKeyUp method. If the method returns true, then the background of a Button is changed.

// Uses the Keyboard.IsKeyUp to determine if a key is up.
if (Keyboard.IsKeyUp(Key.Return))
{
    btnIsUp.Background = Brushes.Red;
}
else
{
    btnIsUp.Background = Brushes.AliceBlue;
}

' Uses the Keyboard.IsKeyUp to determine if a key is up.
If Keyboard.IsKeyUp(Key.Return) Then
    btnIsUp.Background = Brushes.Red
Else
    btnIsUp.Background = Brushes.AliceBlue
End If

Remarks

The GetKeyStates method can be used to determine the set of states of a specific key.

Applies to

Delen via