silverlight媒体播放器插件加载失败

Question

我正在尝试编写一个MMPPF（Microsoft Media Platform Player Framework）通用插件。我把它与银色灯光播放器联系起来。由于某些原因，插件永远不会加载（函数PluginLoadFailed总是被调用。）。我的代码附在下面。

using System;
using System.Windows;
using System.Windows.Controls;
using System.ComponentModel.Composition;
using Microsoft.SilverlightMediaFramework.Plugins.Metadata;
using Microsoft.SilverlightMediaFramework.Plugins;
using Microsoft.SilverlightMediaFramework.Core;
using Microsoft.SilverlightMediaFramework.Utilities;

namespace MyGenericPlugin
{
   [ExportGenericPlugin(PluginName = "MyGenericPlugin",
    PluginDescription = "This is a generic MMPPFPlugin.",
    PluginVersion = "1.0")]
    public class MyGenericPlugin : IGenericPlugin
    {

        public event Action<IPlugin,
        Microsoft.SilverlightMediaFramework.Plugins.Primitives.LogEntry> LogReady;

        public event Action<IPlugin, Exception> PluginLoadFailed;

        public event Action<IPlugin> PluginLoaded;

        public event Action<IPlugin, Exception> PluginUnloadFailed;

        public event Action<IPlugin> PluginUnloaded;


        public void SetPlayer(FrameworkElement Player)
        {
          throw new NotImplementedException();
        }

        bool IPlugin.IsLoaded
        {
          get { throw new NotImplementedException(); }
        }

        void IPlugin.Load()
        {
          throw new NotImplementedException();
        }

        event Action<IPlugin,      
         Microsoft.SilverlightMediaFramework.Plugins.Primitives.LogEntry> IPlugin.LogReady
        {
          add { throw new NotImplementedException(); }
          remove { throw new NotImplementedException(); }
        }

        event Action<IPlugin, Exception> IPlugin.PluginLoadFailed
        {
          add { throw new NotImplementedException(); }
          remove { throw new NotImplementedException(); }
        }

        event Action<IPlugin> IPlugin.PluginLoaded
        {
          add { throw new NotImplementedException(); }
          remove { throw new NotImplementedException(); }
        }

        event Action<IPlugin, Exception> IPlugin.PluginUnloadFailed
        {
          add { throw new NotImplementedException(); }
          remove { throw new NotImplementedException(); }
        }

        event Action<IPlugin> IPlugin.PluginUnloaded
        {
          add { throw new NotImplementedException(); }
          remove { throw new NotImplementedException(); }
        }

        void IPlugin.Unload()
        {
          throw new NotImplementedException();
        }

        void IPlayerConsumer.SetPlayer(FrameworkElement Player)
        {
          throw new NotImplementedException();
        }
   }
 }