silverlight mvvm viewmodel 关闭 view窗口

mvvm viewmodel 关闭 view窗口

创建DialogCloser类

public class DialogCloser
    {
        public static readonly DependencyProperty DialogResultProperty =
            DependencyProperty.RegisterAttached(
                "DialogResult",
                typeof(bool?),
                typeof(DialogCloser),
                new PropertyMetadata(DialogResultChanged));

        private static void DialogResultChanged(
            DependencyObject d,
            DependencyPropertyChangedEventArgs e)
        {
            var window = d as ChildWindow;
            if (window != null)
                window.DialogResult = e.NewValue as bool?;
        }
        public static bool? GetDialogResult(DependencyObject dp)
        {
            return (bool?)dp.GetValue(DialogResultProperty);
        }
        public static void SetDialogResult(DependencyObject target, bool? value)
        {
            target.SetValue(DialogResultProperty, value);
        }
    }

 xaml

xmlns:local="clr-namespace:KTImager.BusinessApp.SLClient"	
local:DialogCloser.DialogResult="{Binding DialogResult}">

 

viewmodel中

        private bool? _dialogResult;

        public bool? DialogResult
        {
            get { return _dialogResult; }
            set
            {
                _dialogResult = value;
                NotifyPropertyChanged(m => m.DialogResult);
            }
        }


        public ICommand OKCommand
        {
            get
            {
                Action act = delegate()
                {

                        DialogResult = true;
                };
                return new RelayCommand(act);
            }
        }