silverlight - 如何使用 MVVM Light Toolkit 关闭带有取消按钮的 ChildWindow

Question

我是 MVVM 的新手并试图弄清楚如何 关闭子窗口 使用传统的取消按钮 MVVM 轻型工具包 .

在我的 ChildWindow (StoreDetail.xaml) 中，我有:

<Button x:Name="CancelButton" Content="Cancel" Command="{Binding CancelCommand}" />

在我的 ViewModel (ViewModelStoreDetail.cs) 中，我有:

public ICommand CancelCommand { get; private set; }

public ViewModelStoreDetail()
{
    CancelCommand = new RelayCommand(CancelEval);
}

private void CancelEval()
{
    //Not sure if Messenger is the way to go here...
    //Messenger.Default.Send<string>("ClosePostEventChildWindow", "ClosePostEventChildWindow");
}

Answer 1

private DelegateCommand _cancelCommand;

public ICommand CancelCommand
{
    get
    {
        if (_cancelCommand == null)
            _cancelCommand = new DelegateCommand(CloseWindow);
        return _cancelCommand;
    }
}

private void CloseWindow()
{
    Application.Current.Windows[Application.Current.Windows.Count - 1].Close();
}