怎样仅通过xaml实现页面淡入淡出切换

[luckywll]

wpf中实现点击几个按钮，主窗口区域淡入淡出切换页面，我用的方法需要在cs里面写代码，想研究一下怎么在xaml里面就实现，最好同时按钮的click相应在cs里面还能响应，处理一些后台的东西？

[Bonjour-你好]

那你贴一下你的cs中的代码吧，看你描述，感觉是动画

[luckywll]

xaml里面 Navigating="NavigationWindow_Navigating"

private void NavigationWindow_Navigating(object sender, NavigatingCancelEventArgs e)
        {
            if (Content != null && !_allowDirectNavigation)
            {
                e.Cancel = true;
                _navArgs = e;
                this.IsHitTestVisible = false;
                DoubleAnimation da = new DoubleAnimation(0.3d, new Duration(TimeSpan.FromMilliseconds(300)));
                da.Completed += FadeOutCompleted;
                this.BeginAnimation(OpacityProperty, da);
            }
            _allowDirectNavigation = false;
        }
private void FadeOutCompleted(object sender, EventArgs e)
        {
            (sender as AnimationClock).Completed -= FadeOutCompleted;

            this.IsHitTestVisible = true;

            _allowDirectNavigation = true;
            switch (_navArgs.NavigationMode)
            {
                case NavigationMode.New:
                    if (_navArgs.Uri == null)
                    {
                        NavigationService.Navigate(_navArgs.Content);
                    }
                    else
                    {
                        NavigationService.Navigate(_navArgs.Uri);
                    }
                    break;
                case NavigationMode.Back:
                    NavigationService.GoBack();
                    break;

                case NavigationMode.Forward:
                    NavigationService.GoForward();
                    break;
                case NavigationMode.Refresh:
                    NavigationService.Refresh();
                    break;
            }

            Dispatcher.BeginInvoke(DispatcherPriority.Loaded,
                (ThreadStart)delegate()
            {
                DoubleAnimation da = new DoubleAnimation(1.0d, new Duration(TimeSpan.FromMilliseconds(200)));
                this.BeginAnimation(OpacityProperty, da);
            });
        }

就是想完全有xaml里面用triger实现

[Bonjour-你好]

不知是不是这样

<Window x:Class="WpfApplication1.Window1"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="Window1" Height="300" Width="300">

    <Window.Triggers>
        <EventTrigger RoutedEvent="Loaded">
            <BeginStoryboard>
                <Storyboard >
                    <DoubleAnimation Duration="0:0:3" Storyboard.TargetProperty="Opacity" From="0" To="1" />
                </Storyboard>
            </BeginStoryboard>
        </EventTrigger>
    </Window.Triggers>

    <Grid Background="Khaki"/>
</Window>

[luckywll]

<StackPanel Grid.Row="1" Orientation="Horizontal">
                        <RadioButton Content="page1" Checked="Button_Click_1" GroupName="r1" Style="{StaticResource myRadio}" x:Name="radioDef" Margin="5" Width="70" Height="90">
                            <RadioButton.Background>
                                <ImageBrush ImageSource="res/1.png"/>
                            </RadioButton.Background>
                        </RadioButton>
                        <RadioButton Content="page2" Checked="Button_Click_2" GroupName="r1"  Style="{StaticResource myRadio}" Margin="5" Width="70" Height="90" >
                            <RadioButton.Background>
                                <ImageBrush ImageSource="res/2.png"/>
                            </RadioButton.Background>
                        </RadioButton>
                    </StackPanel>
<Frame Grid.Row="2"  x:Name="page2frame" NavigationUIVisibility="Hidden"  Navigating="NavigationWindow_Navigating"></Frame>

public MainWindow()
        {
            InitializeComponent();
            radioDef.IsChecked = true;
        }

 //淡入淡出切换
        private bool _allowDirectNavigation = false;
        private NavigatingCancelEventArgs _navArgs = null;
        Page1 page1 = new Page1();
        Page2 page2 = new Page2();
        int nPage;

        private void NavigationWindow_Navigating(object sender, NavigatingCancelEventArgs e)
        {
            if (Content != null && !_allowDirectNavigation)
            {
                e.Cancel = true;
                _navArgs = e;
                this.IsHitTestVisible = false;
                DoubleAnimation da = new DoubleAnimation(1, 0.5, new Duration(TimeSpan.FromMilliseconds(200)));
                Storyboard.SetTarget(da, page2frame);
                Storyboard.SetTargetProperty(da, new PropertyPath("(UIElement.Opacity)"));
                Storyboard bord = new Storyboard();
                bord.Children.Add(da);
                bord.Completed += FadeOutCompleted;
                bord.Begin();
                //da.Completed += FadeOutCompleted;
                //this.BeginAnimation(OpacityProperty, da);
            }
            _allowDirectNavigation = false;
        }

        private void FadeOutCompleted(object sender, EventArgs e)
        {
            //(sender as AnimationClock).Completed -= FadeOutCompleted;
            //(sender as Storyboard).Completed -= FadeOutCompleted;

            this.IsHitTestVisible = true;

            _allowDirectNavigation = true;
            switch (_navArgs.NavigationMode)
            {
                case NavigationMode.New:
                    if (_navArgs.Uri == null)
                    {
                        //NavigationService.Navigate(_navArgs.Content);
                        page2frame.Navigate(_navArgs.Content);
                    }
                    else
                    {
                        //NavigationService.Navigate(_navArgs.Uri);
                        page2frame.Navigate(_navArgs.Uri);
                        page2frame.RemoveBackEntry();
                    }
                    break;
                case NavigationMode.Back:
                    //NavigationService.GoBack();
                    page2frame.GoBack();
                    break;

                case NavigationMode.Forward:
                    //NavigationService.GoForward();
                    page2frame.GoForward();
                    break;
                case NavigationMode.Refresh:
                    //NavigationService.Refresh();
                    page2frame.Refresh();
                    break;
            }

            Dispatcher.BeginInvoke(DispatcherPriority.Loaded,
                (ThreadStart)delegate()
                {
                    DoubleAnimation da = new DoubleAnimation(0.5,1, new Duration(TimeSpan.FromMilliseconds(200)));
                    Storyboard.SetTarget(da, page2frame);
                    Storyboard.SetTargetProperty(da, new PropertyPath("(UIElement.Opacity)"));
                    Storyboard bord = new Storyboard();
                    bord.Children.Add(da);
                    bord.Begin();
                    //this.BeginAnimation(OpacityProperty, da);
                });
        }

        private void Button_Click_1(object sender, RoutedEventArgs e)
        {
            if (nPage != 1)
            {
                page2frame.Navigate(page1);
                nPage = 1;
            }
        }
        

        private void Button_Click_2(object sender, RoutedEventArgs e)
        {
            if (nPage != 2)
            {
                page2frame.Navigate(page2);
                nPage = 2;
            }
        }

不是一个界面加载，而是两个page切换，我知道界面的事件处理可以卸载xaml的triger里面，但是这里用到两个托管，不知道怎么写了

[luckywll]

能来个管理吧把打错的照片删除啊