WPF 鼠标在图片Image上悬停时切换更改设置图片源Source

// 无效的写法,图片不会被切换

 <Image Margin="0,0,0,0"   Width="50" Height="50" Source="1.png"   >
            <Image.Resources>
                <Style TargetType="{x:Type Image}">
                    <Style.Triggers>
                        <Trigger Property="IsMouseOver" Value="True">
                            <Setter Property="Cursor" Value="Hand"/>
                            <Setter Property="Source" Value="2.png"/>
                        </Trigger>
                    </Style.Triggers>
                </Style>
            </Image.Resources>
</Image>

//解决方案:

        <Image Margin="0,0,0,0"   Width="50" Height="50">
            <Image.Resources>
                <Style TargetType="{x:Type Image}">
                    <Setter Property="Source" Value="1.png"/>
                    <Style.Triggers>
                        <Trigger Property="IsMouseOver" Value="True">
                            <Setter Property="Cursor" Value="Hand"/>
                            <Setter Property="Source" Value="2.png"/>
                        </Trigger>
                    </Style.Triggers>
                </Style>
            </Image.Resources>
        </Image>

<Window.Resources>
<local:SwitchSourceConverter x:Key="SwitchSourceConverter" />
</Window.Resources>

 <Image>
            <Image.Resources>
                <Style TargetType="{x:Type Image}">
                    <Setter Property="Source" Value="1.png" />
                    <Setter Property="Width" Value="100" />
                    <Setter Property="Height" Value="150" />
                    <Style.Triggers>
                        <Trigger Property="IsMouseOver" Value="True">
                            <Setter Property="Cursor" Value="Hand" />
                            <Setter Property="Width" Value="170" />
                            <Setter Property="Height" Value="200" />
                            <Setter Property="Source" Value="{Binding Converter={StaticResource SwitchSourceConverter}}" />
                        </Trigger>
                    </Style.Triggers>
                </Style>
            </Image.Resources>
        </Image>

  public class SwitchSourceConverter : IValueConverter
    {

        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            //注意 图片不存在或者出错,会造成不停闪烁,因为鼠标一直在图片上,图片则不停的进行更改Source
      var path = "3.png";
            var  uri = new Uri(path, UriKind.RelativeOrAbsolute);
            //返回以下几种方式都可以
            //return new BitmapImage(uri);
            return path;
            return uri;
            BitmapImage image = new BitmapImage();
            image.BeginInit();
            image.UriSource = new Uri(path, UriKind.RelativeOrAbsolute);
            image.EndInit();
            return image;
        }

        public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            throw new NotImplementedException();
        }
    }