WPF 简单的循环GIF播放

//MVVM要事件绑定，记得项目引用类库“Sysrem.Windows.interactivity”，然后XAML引用 xmlns:i="http://schemas.microsoft.com/expression/2010/interactivity"

<MediaElement Canvas.Left="0"
                                      Canvas.Top="10"
                                      Name="MediaElement"
                                      Width="300"
                                      Height="350"
                                      ClipToBounds="True"
                                      Source="{Binding GifUrl}" >
                            <i:Interaction.Triggers>
                                <i:EventTrigger EventName="MediaEnded">
                                    <i:InvokeCommandAction Command="{Binding MediaEndedCommand}" CommandParameter="{Binding ElementName=MediaElement}"/>
                                </i:EventTrigger>
                            </i:Interaction.Triggers>
                        </MediaElement>

  public ICommand MediaEndedCommand
        {
            get
            {
                return new DelegateCommand<object>((sender) =>
                {
                    MediaElement media = (MediaElement)sender;
                    media.LoadedBehavior = MediaState.Manual;
                    media.Position = TimeSpan.FromMilliseconds(1);
                    media.Play();
                });
            }

        }