C# 如何在资源中按ElementName绑定？_C#_.net_Wpf_Xaml_.net 4.5

C# 如何在资源中按ElementName绑定？

c# .net wpf xaml

C# 如何在资源中按ElementName绑定？,c#,.net,wpf,xaml,.net-4.5,C#,.net,Wpf,Xaml,.net 4.5,它是有效的，但并不总是有效的工作 MainWindow.xaml： <Window x:Class="WpfApplication2.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:d="http://schemas.microsoft.

它是有效的，但并不总是有效的

工作

MainWindow.xaml：

<Window x:Class="WpfApplication2.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:local="clr-namespace:WpfApplication2"
    mc:Ignorable="d"
    Title="MainWindow" Height="350" Width="525">
<Window.Resources>
    <Storyboard x:Key="OnMouseDown1">
        <DoubleAnimation Storyboard.TargetProperty="Width" Storyboard.TargetName="viewbox"
                     From="{Binding ElementName=viewbox, Path=ActualWidth}"
                     To="0"
                     Duration="0:0:1">
        </DoubleAnimation>
    </Storyboard>
</Window.Resources>
<Window.Triggers>
    <EventTrigger RoutedEvent="UIElement.MouseDown" SourceName="ellipse">
        <BeginStoryboard Storyboard="{StaticResource OnMouseDown1}"/>
    </EventTrigger>
</Window.Triggers>
<Viewbox x:Name="viewbox">
    <Ellipse x:Name="ellipse" Width="100" Height="100" Fill="Red"></Ellipse>
</Viewbox></Window>

<Window x:Class="WpfApplication2.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:local="clr-namespace:WpfApplication2"
    mc:Ignorable="d"
    Title="MainWindow" Height="350" Width="525">
<local:UserControl1></local:UserControl1></Window>

<Window x:Class="WpfApplication2.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:local="clr-namespace:WpfApplication2"
    mc:Ignorable="d"
    Title="MainWindow" Height="350" Width="525">
<local:UserControl1></local:UserControl1></Window>

工作

MainWindow.xaml：

<Window x:Class="WpfApplication2.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:local="clr-namespace:WpfApplication2"
    mc:Ignorable="d"
    Title="MainWindow" Height="350" Width="525">
<Window.Resources>
    <Storyboard x:Key="OnMouseDown1">
        <DoubleAnimation Storyboard.TargetProperty="Width" Storyboard.TargetName="viewbox"
                     From="{Binding ElementName=viewbox, Path=ActualWidth}"
                     To="0"
                     Duration="0:0:1">
        </DoubleAnimation>
    </Storyboard>
</Window.Resources>
<Window.Triggers>
    <EventTrigger RoutedEvent="UIElement.MouseDown" SourceName="ellipse">
        <BeginStoryboard Storyboard="{StaticResource OnMouseDown1}"/>
    </EventTrigger>
</Window.Triggers>
<Viewbox x:Name="viewbox">
    <Ellipse x:Name="ellipse" Width="100" Height="100" Fill="Red"></Ellipse>
</Viewbox></Window>

<Window x:Class="WpfApplication2.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:local="clr-namespace:WpfApplication2"
    mc:Ignorable="d"
    Title="MainWindow" Height="350" Width="525">
<local:UserControl1></local:UserControl1></Window>

<Window x:Class="WpfApplication2.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:local="clr-namespace:WpfApplication2"
    mc:Ignorable="d"
    Title="MainWindow" Height="350" Width="525">
<local:UserControl1></local:UserControl1></Window>

UserControl1.xaml：

<UserControl x:Class="WpfApplication2.UserControl1"
         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
         xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
         xmlns:local="clr-namespace:WpfApplication2"
         mc:Ignorable="d" 
         d:DesignHeight="300" d:DesignWidth="300">
<UserControl.Resources>
    <Storyboard x:Key="OnMouseDown1">
        <DoubleAnimation Storyboard.TargetProperty="Width" Storyboard.TargetName="viewbox"
                         From="{Binding ElementName=viewbox, Path=ActualWidth}"
                         To="0"
                         Duration="0:0:1">
        </DoubleAnimation>
    </Storyboard>
</UserControl.Resources>
<Viewbox x:Name="viewbox">
    <Ellipse x:Name="ellipse" Width="100" Height="100" Fill="Red">
        <Ellipse.Triggers>
            <EventTrigger RoutedEvent="UIElement.MouseDown" SourceName="ellipse">
                <BeginStoryboard Storyboard="{StaticResource OnMouseDown1}"/>
            </EventTrigger>
        </Ellipse.Triggers>
    </Ellipse>
</Viewbox></UserControl>

<UserControl x:Class="WpfApplication2.UserControl1"
         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
         xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
         xmlns:local="clr-namespace:WpfApplication2"
         mc:Ignorable="d" 
         d:DesignHeight="300" d:DesignWidth="300">
<UserControl.Resources>
    <Storyboard x:Key="OnMouseDown1">
        <DoubleAnimation Storyboard.TargetProperty="Width" Storyboard.TargetName="viewbox"
                         From="{Binding ElementName=viewbox, Path=ActualWidth}"
                         To="0"
                         Duration="0:0:1">
        </DoubleAnimation>
    </Storyboard>
</UserControl.Resources>
<UserControl.Triggers>
    <EventTrigger RoutedEvent="UIElement.MouseDown" SourceName="ellipse">
        <BeginStoryboard Storyboard="{StaticResource OnMouseDown1}"/>
    </EventTrigger>
</UserControl.Triggers>
<Viewbox x:Name="viewbox">
    <Ellipse x:Name="ellipse" Width="100" Height="100" Fill="Red"></Ellipse>
</Viewbox></UserControl>

不起作用

MainWindow.xaml：

<Window x:Class="WpfApplication2.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:local="clr-namespace:WpfApplication2"
    mc:Ignorable="d"
    Title="MainWindow" Height="350" Width="525">
<Window.Resources>
    <Storyboard x:Key="OnMouseDown1">
        <DoubleAnimation Storyboard.TargetProperty="Width" Storyboard.TargetName="viewbox"
                     From="{Binding ElementName=viewbox, Path=ActualWidth}"
                     To="0"
                     Duration="0:0:1">
        </DoubleAnimation>
    </Storyboard>
</Window.Resources>
<Window.Triggers>
    <EventTrigger RoutedEvent="UIElement.MouseDown" SourceName="ellipse">
        <BeginStoryboard Storyboard="{StaticResource OnMouseDown1}"/>
    </EventTrigger>
</Window.Triggers>
<Viewbox x:Name="viewbox">
    <Ellipse x:Name="ellipse" Width="100" Height="100" Fill="Red"></Ellipse>
</Viewbox></Window>

<Window x:Class="WpfApplication2.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:local="clr-namespace:WpfApplication2"
    mc:Ignorable="d"
    Title="MainWindow" Height="350" Width="525">
<local:UserControl1></local:UserControl1></Window>

<Window x:Class="WpfApplication2.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:local="clr-namespace:WpfApplication2"
    mc:Ignorable="d"
    Title="MainWindow" Height="350" Width="525">
<local:UserControl1></local:UserControl1></Window>

UserControl1.xaml：

<UserControl x:Class="WpfApplication2.UserControl1"
         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
         xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
         xmlns:local="clr-namespace:WpfApplication2"
         mc:Ignorable="d" 
         d:DesignHeight="300" d:DesignWidth="300">
<UserControl.Resources>
    <Storyboard x:Key="OnMouseDown1">
        <DoubleAnimation Storyboard.TargetProperty="Width" Storyboard.TargetName="viewbox"
                         From="{Binding ElementName=viewbox, Path=ActualWidth}"
                         To="0"
                         Duration="0:0:1">
        </DoubleAnimation>
    </Storyboard>
</UserControl.Resources>
<Viewbox x:Name="viewbox">
    <Ellipse x:Name="ellipse" Width="100" Height="100" Fill="Red">
        <Ellipse.Triggers>
            <EventTrigger RoutedEvent="UIElement.MouseDown" SourceName="ellipse">
                <BeginStoryboard Storyboard="{StaticResource OnMouseDown1}"/>
            </EventTrigger>
        </Ellipse.Triggers>
    </Ellipse>
</Viewbox></UserControl>

<UserControl x:Class="WpfApplication2.UserControl1"
         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
         xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
         xmlns:local="clr-namespace:WpfApplication2"
         mc:Ignorable="d" 
         d:DesignHeight="300" d:DesignWidth="300">
<UserControl.Resources>
    <Storyboard x:Key="OnMouseDown1">
        <DoubleAnimation Storyboard.TargetProperty="Width" Storyboard.TargetName="viewbox"
                         From="{Binding ElementName=viewbox, Path=ActualWidth}"
                         To="0"
                         Duration="0:0:1">
        </DoubleAnimation>
    </Storyboard>
</UserControl.Resources>
<UserControl.Triggers>
    <EventTrigger RoutedEvent="UIElement.MouseDown" SourceName="ellipse">
        <BeginStoryboard Storyboard="{StaticResource OnMouseDown1}"/>
    </EventTrigger>
</UserControl.Triggers>
<Viewbox x:Name="viewbox">
    <Ellipse x:Name="ellipse" Width="100" Height="100" Fill="Red"></Ellipse>
</Viewbox></UserControl>

例外情况：

PresentationCore.dll中发生类型为“System.Windows.Media.Animation.AnimationException”的未处理异常其他信息：无法使用“System.Windows.Media.Animation.DoubleAnimation”对“System.Windows.Controls.Viewbox”上的“Width”属性设置动画。有关详细信息，请参见内部异常

如何使其工作？

内部异常是什么？@Nikola.Lukovic我不知道如何检查内部异常。我尝试过，但检查失败。内部异常应该是

System.Windows.Media.Animation.DoubleAnimation不能使用默认的原始值NaN

。设置视图框的宽度应该可以解决这个问题。@Elite026是的，但我需要自动设置宽度。如示例中所述，有时有效，有时无效。