.NET Framework (current version)
Gets a value that indicates whether the key referenced by the event is in the up state.
PresentationCore (in PresentationCore.dll)
Public ReadOnly Property IsUp As Boolean
true if the key is up; otherwise, false. There is no default value.
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.
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 Then
btnIsUp.Background = Brushes.Red
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Available since 3.0