Raccourcis Clavier Expander WPF C#

Tu peux utiliser les KeyBindings.

Code:

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<Window x:Class="WpfApplication2.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="525">
    <Window.Resources>
 
    </Window.Resources>
    <Window.InputBindings>
        <KeyBinding Command="{Binding OpenExpanderCommand}"
                    Gesture="Return" />
        <KeyBinding Command="{Binding CloseExpanderCommand}"
                    Gesture="Escape" />
    </Window.InputBindings>
    <Border CornerRadius="10" Background="#FFEAEBDD" Margin="20">
        <Expander x:Name="TheExpander">
            <TextBlock FontSize="30" Text="Hello World" />
        </Expander>
 
    </Border>
</Window>

Code:

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using GalaSoft.MvvmLight.Command;
 
namespace WpfApplication2
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow
    {
 
        private RelayCommand _openExpanderCommand;
 
        public RelayCommand OpenExpanderCommand { get { return _openExpanderCommand ?? (_openExpanderCommand = new RelayCommand(() => TheExpander.IsExpanded = true)); }}
 
 
        private RelayCommand _closeExpanderCommand;
 
        public RelayCommand CloseExpanderCommand { get { return _closeExpanderCommand ?? (_closeExpanderCommand = new RelayCommand(() => TheExpander.IsExpanded = false)); } }
 
 
        public MainWindow()
        {
 
 
            this.DataContext = this;
 
            InitializeComponent();
        }
 
    }
 
}

Le code n'est pas MVVM (Mais j'utilise RelayCommand de la librairie MVVM Light comme implémentation de ICommand) mais c'est un bon début.