Question

我希望在特定时间后关闭窗口，但这取决于属性。如果这是真的，它应该在6秒后关闭，否则在3秒后关闭。我想在xaml中完成几乎所有的事情。我对c＃代码不满意。

这是我到目前为止所尝试的内容：

我的xaml：

<Window x:Class="embedUserc.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"
    xmlns:embedUserc="clr-namespace:embedUserc">
<Window.Triggers>
    <DataTrigger Binding="{Binding IsSomething}" Value="False" >
        <DataTrigger.EnterActions>
            <BeginStoryboard>
                <Storyboard Duration="0:0:6" FillBehavior="Stop"  >
                    <BooleanAnimationUsingKeyFrames Storyboard.TargetName="CloseBehavior" Storyboard.TargetProperty="Close">
                        <DiscreteBooleanKeyFrame KeyTime="0:0:5" Value="True" />
                    </BooleanAnimationUsingKeyFrames>
                </Storyboard>
            </BeginStoryboard>
        </DataTrigger.EnterActions>
    </DataTrigger>
    <DataTrigger Binding="{Binding IsSomething}" Value="True" >
        <DataTrigger.EnterActions>
            <BeginStoryboard>
                <Storyboard Duration="0:0:4" FillBehavior="Stop"  >
                    <BooleanAnimationUsingKeyFrames Storyboard.TargetName="CloseBehavior" Storyboard.TargetProperty="Close" >
                        <DiscreteBooleanKeyFrame KeyTime="0:0:3" Value="True" />
                    </BooleanAnimationUsingKeyFrames>
                </Storyboard>
            </BeginStoryboard>
        </DataTrigger.EnterActions>
    </DataTrigger>
</Window.Triggers>
<Grid>
    <embedUserc:WindowCloseBehavior x:Name="CloseBehavior"/>
</Grid>

我的c＃代码：

using System.Windows;

namespace embedUserc
{
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
            DataContext = new ViewModel();
        }
    }

    public class WindowCloseBehavior : FrameworkElement
    {
        public static void SetClose(DependencyObject target, bool value)
        {
            target.SetValue(CloseProperty, value);
        }

        public static readonly DependencyProperty CloseProperty =
            DependencyProperty.RegisterAttached(
                "Close",
                typeof(bool),
                typeof(WindowCloseBehavior),
                new UIPropertyMetadata(false, OnClose));

        private static void OnClose(DependencyObject sender, DependencyPropertyChangedEventArgs e)
        {
            if (e.NewValue is bool && ((bool)e.NewValue))
            {
                Window window = GetWindow(sender);
                if (window != null)
                    window.Close();
            }
        }

        private static Window GetWindow(DependencyObject sender)
        {
            Window window = null;
            if (sender is Window)
                window = (Window)sender;
            return window ?? (Window.GetWindow(sender));
        }
    }

    public class ViewModel
    {
        public bool IsSomething { get { return true; } }
    }
}

Answer 1

我现在知道了，这是带有相同c＃代码的工作xaml：

<Window.Resources>
 <Style x:Key="CloseStyle">
     <Style.Triggers>
            <DataTrigger Binding="{Binding IsSomething}" Value="False" >
                <DataTrigger.EnterActions>
                    <BeginStoryboard >
                        <Storyboard Duration="0:0:6" FillBehavior="Stop"  >
                            <BooleanAnimationUsingKeyFrames Storyboard.TargetProperty="Close" >
                                <DiscreteBooleanKeyFrame KeyTime="0:0:5" Value="True" />
                            </BooleanAnimationUsingKeyFrames>
                        </Storyboard>
                    </BeginStoryboard> 
                </DataTrigger.EnterActions>
            </DataTrigger>
            <DataTrigger Binding="{Binding IsSomething}" Value="True" >
                <DataTrigger.EnterActions>
                    <BeginStoryboard>
                        <Storyboard Duration="0:0:4" FillBehavior="Stop"  >
                            <BooleanAnimationUsingKeyFrames Storyboard.TargetProperty="Close" >
                                <DiscreteBooleanKeyFrame KeyTime="0:0:3" Value="True" />
                            </BooleanAnimationUsingKeyFrames>
                        </Storyboard>
                    </BeginStoryboard>
                </DataTrigger.EnterActions>
            </DataTrigger>
        </Style.Triggers>
 </Style>

仅在特定时间显示窗口，然后关闭它

1 个答案: