提示"上下文不存在名称myStoryboard"解决方案

提示"上下文不存在名称myStoryboard"

XML code

<Window x:Class="动画.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">    <Canvas Background="#CDFCAE">        <Canvas.Resources>            <Storyboard x:Name="myStoryboard">                <DoubleAnimation                     Storyboard.TargetName="myTransform"                     Storyboard.TargetProperty="Angle"                         From="0" To="180" Duration="0:0:5"                     RepeatBehavior="Forever" />            </Storyboard>            </Canvas.Resources>                <Image x:Name="imgTarget" Source="a1.png" Canvas.Left="180" Canvas.Top="80"                MouseEnter="imgTarget_MouseEnter" MouseLeave="imgTarget_MouseLeave">            <Image.RenderTransform>                <RotateTransform x:Name="myTransform" Angle="15" CenterX="120" CenterY="68"/>            </Image.RenderTransform>        </Image>        </Canvas></Window>

C# code

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Windows;using System.Windows.Controls;using System.Windows.Data;using System.Windows.Documents;using System.Windows.Input;using System.Windows.Media;using System.Windows.Media.Imaging;using System.Windows.Navigation;using System.Windows.Shapes;namespace 动画{    /// <summary>    /// MainWindow.xaml 的交互逻辑    /// </summary>    public partial class MainWindow : Window    {        public MainWindow()        {            InitializeComponent();        }        private void imgTarget_MouseEnter(object sender, MouseEventArgs e)        {            myStoryboard.Begin();        }        private void imgTarget_MouseLeave(object sender, MouseEventArgs e)        {            myStoryboard.Stop();        }    }}

[解决办法]
A Storyboard can be used to animate dependency properties of animatable classes (for more information about what makes a class animatable, see the Animation Overview). However, because storyboarding is a framework-level feature, the object must belong to the NameScope of a FrameworkElement or a FrameworkContentElement.

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