这个属性让我发疯，我的 wpf 表单中有一个按钮，我想在这里实现的是
当我单击按钮时，禁用主窗口并弹出消息框。
这是后面的代码
private void button1_Click(object sender, System.Windows.RoutedEventArgs e)
{
if (sender is Button)
{
Application.Current.Dispatcher.Invoke(new Action(() =>
{
Application.Current.MainWindow.IsEnabled = false;
MessageBox.Show(Application.Current.MainWindow, "test");
}));
}
}
初始化我的主窗口
protected override void InitializeShell()
{
base.InitializeShell();
Application.Current.MainWindow = (Shell)this.Shell;
Application.Current.MainWindow.Show();
}
它在“Application.Current.MainWindow.IsEnabled = false;”处抛出异常“'[Unknown]' 属性未指向路径'(0).(1)[1].(2)' 中的 DependencyObject。” .
这是几行的堆栈跟踪
at System.Windows.Media.Animation.Storyboard.VerifyPathIsAnimatable(PropertyPath path)
at System.Windows.Media.Animation.Storyboard.ClockTreeWalkRecursive(Clock currentClock, DependencyObject containingObject, INameScope nameScope, DependencyObject parentObject, String parentObjectName, PropertyPath parentPropertyPath, HandoffBehavior handoffBehavior, HybridDictionary clockMappings, Int64 layer)
如果我绕过它，它会显示消息框，但我想知道为什么它会在 isEnable=false 抛出异常？
非常感谢任何帮助。
提前致谢
我的 shell.xaml
<Window x:Class="Webster.Client.Shell"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:c="clr-namespace:Webster.Client"
xmlns:cal="http://www.codeplex.com/CompositeWPF"
xmlns:Controls="clr-namespace:Webster.Client.Controls"
xmlns:inf="clr-namespace:Webster.Client.Infrastructure;assembly=Webster.Client.Infrastructure"
Title="Webster - News Segmentation and Encoding" WindowStartupLocation="CenterScreen" WindowState="Normal"
Icon="/Webster.Client;component/Resources/film_clip64.png" SizeToContent="Manual" HorizontalAlignment="Center"
MinWidth="390" Loaded="Window_Loaded">
<!-- window -->
<Window.Background>
<ImageBrush ImageSource="Resources/background.png" Stretch="Fill"/>
</Window.Background>
<Window.Resources>
<DataTemplate DataType="{x:Type inf:ExtendedHeader}">
<StackPanel Orientation="Horizontal" ToolTip="{Binding Path=ToolTip}">
<Image Source="{Binding Path=IconUri}" Width="16" Height="16" />
<TextBlock Text="{Binding Path=Title}" />
</StackPanel>
</DataTemplate>
<Storyboard x:Key="InTransition">
<DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="Logo" Storyboard.TargetProperty="(UIElement.Opacity)">
<SplineDoubleKeyFrame KeyTime="00:00:00" Value="0"/>
<SplineDoubleKeyFrame KeyTime="00:00:02" Value="0"/>
<SplineDoubleKeyFrame KeyTime="00:00:02.5000000" Value="1"/>
</DoubleAnimationUsingKeyFrames>
<DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="ContentGrid" Storyboard.TargetProperty="(UIElement.Opacity)">
<SplineDoubleKeyFrame KeyTime="00:00:00" Value="0"/>
<SplineDoubleKeyFrame KeyTime="00:00:01" Value="0"/>
<SplineDoubleKeyFrame KeyTime="00:00:01.5000000" Value="1"/>
</DoubleAnimationUsingKeyFrames>
<DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="ContentGrid" Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[3].(TranslateTransform.Y)">
<SplineDoubleKeyFrame KeyTime="00:00:00" Value="-72"/>
<SplineDoubleKeyFrame KeyTime="00:00:01" Value="-157"/>
<SplineDoubleKeyFrame KeySpline="0.5,0,0.5,1" KeyTime="00:00:01.5000000" Value="0"/>
</DoubleAnimationUsingKeyFrames>
<DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="Logo" Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[3].(TranslateTransform.Y)">
<SplineDoubleKeyFrame KeyTime="00:00:00" Value="-50"/>
<SplineDoubleKeyFrame KeyTime="00:00:02" Value="-101"/>
<SplineDoubleKeyFrame KeySpline="0,0,0,1" KeyTime="00:00:02.5000000" Value="0"/>
</DoubleAnimationUsingKeyFrames>
<DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="MainToolbar" Storyboard.TargetProperty="(UIElement.Opacity)">
<SplineDoubleKeyFrame KeyTime="00:00:00" Value="0"/>
<SplineDoubleKeyFrame KeyTime="00:00:01.5000000" Value="0"/>
<SplineDoubleKeyFrame KeyTime="00:00:02" Value="1"/>
</DoubleAnimationUsingKeyFrames>
<DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="MainToolbar" Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[3].(TranslateTransform.Y)">
<SplineDoubleKeyFrame KeyTime="00:00:00" Value="100"/>
<SplineDoubleKeyFrame KeyTime="00:00:01.5000000" Value="100"/>
<SplineDoubleKeyFrame KeyTime="00:00:02" Value="0" KeySpline="0,0.495999991893768,0.504000008106232,1"/>
</DoubleAnimationUsingKeyFrames>
</Storyboard>
</Window.Resources>
<Window.Triggers>
<EventTrigger RoutedEvent="FrameworkElement.Loaded">
<BeginStoryboard Storyboard="{StaticResource InTransition}"/>
</EventTrigger>
</Window.Triggers>
<!-- content grid -->
<Grid HorizontalAlignment="Stretch" VerticalAlignment="Top" >
<Grid RenderTransformOrigin="0.5,0.5" Margin="0,0,0,0" Grid.RowSpan="2">
<Grid.RowDefinitions>
<RowDefinition Height="20"/>
<RowDefinition Height="*" />
<RowDefinition Height="25"/>
<RowDefinition Height="20"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="30*" />
<ColumnDefinition Width="627*" />
<ColumnDefinition Width="Auto" />
</Grid.ColumnDefinitions>
<!-- logo -->
<Canvas x:Name="Logo" Grid.ColumnSpan="3" RenderTransformOrigin="0.5,0.5">
<Canvas.RenderTransform>
<TransformGroup>
<ScaleTransform/>
<SkewTransform/>
<RotateTransform/>
<TranslateTransform/>
</TransformGroup>
</Canvas.RenderTransform>
<TextBlock
Text=""
TextAlignment="Center"
TextWrapping="NoWrap"
Foreground="#FFC4CFD6"
FontSize="50"
Opacity="0.85"
Canvas.Left="9"
Canvas.Top="6"
VerticalAlignment="Stretch"
HorizontalAlignment="Stretch"
Height="60"
Width="{Binding ElementName=Logo,Path=ActualWidth}"
FontWeight="Bold" />
</Canvas>
<!-- main bar -->
<ItemsControl x:Name="MainToolbar" cal:RegionManager.RegionName="{x:Static inf:RegionNames.MainToolBarRegion}" HorizontalAlignment="Right" VerticalAlignment="Top" Margin="0,0,0,0" Grid.Row="1" RenderTransformOrigin="0.5,0.5" Grid.Column="1">
<ItemsControl.RenderTransform>
<TransformGroup>
<ScaleTransform/>
<SkewTransform/>
<RotateTransform/>
<TranslateTransform/>
</TransformGroup>
</ItemsControl.RenderTransform>
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<StackPanel Orientation="Horizontal" Margin="10, 0, 10, 10">
</StackPanel>
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
</ItemsControl>
<!-- content -->
<Grid x:Name="ContentGrid" Grid.Row="1" RenderTransformOrigin="0.5,0.5" Grid.ColumnSpan="2">
<Grid.RenderTransform>
<TransformGroup>
<ScaleTransform/>
<SkewTransform/>
<RotateTransform/>
<TranslateTransform/>
</TransformGroup>
</Grid.RenderTransform>
<Controls:AnimatedTabControlWebster
x:Name="StoryTab"
SelectedIndex="0"
VerticalAlignment="Stretch"
HorizontalAlignment="Stretch"
ItemContainerStyle="{StaticResource ShellTabItemStyle}"
Background="{StaticResource headerBarBG}"
cal:RegionManager.RegionName="{x:Static inf:RegionNames.MainRegion}"
AutomationProperties.AutomationId="PositionSummaryTab" IsEnabled="True">
</Controls:AnimatedTabControlWebster>
</Grid>
<!-- footer -->
<StackPanel
Grid.Row="2"
Grid.Column="0"
Grid.ColumnSpan="3"
VerticalAlignment="Stretch"
HorizontalAlignment="Stretch"
Orientation="Horizontal"
FlowDirection="RightToLeft"
Margin="0 0 10 0"
>
<Button Name="btnExit" Click="btnExit_Click">Exit</Button>
</StackPanel>
<StackPanel
Grid.Row="3"
Grid.Column="0"
Grid.ColumnSpan="3"
VerticalAlignment="Stretch"
HorizontalAlignment="Center"
Orientation="Horizontal"
>
<ItemsControl
cal:RegionManager.RegionName="{x:Static inf:RegionNames.MainFooterRegion}"
/>
</StackPanel>
</Grid>
</Grid>