public static void RemoveListener(INotifyPropertyChanged source, IWeakEventListener listener)
        {
            if (source == null) { throw new ArgumentNullException("source"); }
            if (listener == null) { throw new ArgumentNullException("listener"); }

            PropertyChangedEventManager.CurrentManager.ProtectedRemoveListener(source, listener);
        }

 /// <summary>
 /// Adds the specified listener to the list of listeners on the specified source. 
 /// </summary>
 /// <param name="source">The object with the event.</param>
 /// <param name="listener">The object to add as a listener.</param>
 /// <param name="propertyName">The name of the property that exists on
 /// source upon which to listen for changes.</param>
 public static void AddListener(
     INotifyPropertyChanged source,
     IWeakEventListener listener,
     string propertyName)
 {
     Instance.PrivateAddListener(source, listener, propertyName);
 }

 /// <summary>
 /// PropertyChangedEventManager から弱いイベントのリスナーを削除します。
 /// (明示的に削除を行わなくてもメモリーリークは発生しません)
 /// </summary>
 /// <param name="notifyObject">WeakPropertyChanged を発火するオブジェクト</param>
 /// <param name="weakEventListener">弱いイベントの発火を待ち受けるオブジェクト</param>
 public void RemoveListener(INotifyPropertyChanged notifyObject, IWeakEventListener weakEventListener)
 {
     PropertyChangedEventManager.RemoveListener(
         notifyObject,
         weakEventListener,
         string.Empty);
 }

        public static void RemoveListener(IHttpClientEvents source, IWeakEventListener listener)
        {
            // weak event pattern cannot be used if we're running from command line.
            Debug.Assert(!EnvironmentUtility.RunningFromCommandLine);

            SendingRequestEventManager.CurrentManager.ProtectedRemoveListener(source, listener);
        }

        /// <summary>Removes an listener from the inner list of listeners.</summary>
        /// <param name="listener">The listener to remove.</param>
        internal static void RemoveListener(IWeakEventListener listener)
        {
            // removes the listener from the inner list of listeners
            CurrentManager.listeners.Remove(listener);

            // start / stop the listening process
            CurrentManager.StartStopListening();
        }

 /// <summary>Removes the specified listener from the list of listeners on the provided source.</summary>
 public static void RemoveListener(DependencyObject source, IWeakEventListener listener)
 {
     if (source == null)
         throw new ArgumentNullException("source");
     if (listener == null)
         throw new ArgumentNullException("listener");
     PreviewMouseWheelEventManager.CurrentManager.ProtectedRemoveListener(source, listener);
 }

        /// <summary>Adds an listener to the inner list of listeners.</summary>
        /// <param name="listener">The listener to add.</param>
        internal static void AddListener(IWeakEventListener listener)
        {
            // add the listener to the inner list of listeners
            CurrentManager.listeners.Add(listener);

            // start / stop the listening process
            CurrentManager.StartStopListening();
        }

 /// <summary>Adds the provided listener to the list of listeners on the provided source.</summary>
 public static void AddListener(DependencyObject source, IWeakEventListener listener)
 {
     if (source == null)
         throw new ArgumentNullException("source");
     if (listener == null)
         throw new ArgumentNullException("listener");
     DoubleClickEventManager.CurrentManager.ProtectedAddListener(source, listener);
 }

 /// <summary>Removes the specified listener from the list of listeners on the provided source.</summary>
 public static void RemoveListener(DependencyObject source, IWeakEventListener listener)
 {
     if (source == null)
         throw new ArgumentNullException("source");
     if (listener == null)
         throw new ArgumentNullException("listener");
     DataContextChangedEventManager.CurrentManager.ProtectedRemoveListener(source, listener);
 }

        //
        //  Public Methods 
        //

        /// <summary>
        /// Add a listener to the given source's event. 
        /// </summary>
        public static void AddListener(INotifyCollectionChanged source, IWeakEventListener listener) 
        { 
            if (source == null)
                throw new ArgumentNullException("source"); 
            if (listener == null)
                throw new ArgumentNullException("listener");

            CurrentManager.ProtectedAddListener(source, listener); 
        }

        /// <summary>
        /// Remove a handler for the given source's event.
        /// </summary>
        public static void RemoveHandler(EventCallBackHandler source, IWeakEventListener listener)
        {
            if (source == null)
                throw new ArgumentNullException("source");
            if (listener == null)
                throw new ArgumentNullException("listener");

            CurrentManager.ProtectedRemoveListener(source, listener);
        }

        //
        //  Public Methods
        //

        /// <summary>
        /// Add a listener to the given source's event.
        /// </summary>
        public static void AddListener(INotifyPropertyChanged source, IWeakEventListener listener, string propertyName)
        {
            if (source == null)
                throw new ArgumentNullException("source");
            if (listener == null)
                throw new ArgumentNullException("listener");

            CurrentManager.PrivateAddListener(source, listener, propertyName);
        }

        public static void AddListener(Dispatcher source, IWeakEventListener listener)
        {
            if (source == null)
                throw new ArgumentNullException("source");
            if (listener == null)
                throw new ArgumentNullException("listener");

            CurrentManager.ProtectedAddListener(source, listener);
        }

        /// <summary>
        /// Remove a listener to the given source's event.</summary>
        public static void RemoveListener(object source, IWeakEventListener listener, PropertyDescriptor pd)
        {
            if (source == null)
                throw new ArgumentNullException("source");
            if (listener == null)
                throw new ArgumentNullException("listener");

            CurrentManager.PrivateRemoveListener(source, listener, pd);
        }

    public static void AddListener( DataGridItemPropertyCollection source, IWeakEventListener listener )
    {
      if( source == null )
        throw new ArgumentNullException( "source" );

      if( listener == null )
        throw new ArgumentNullException( "listener" );

      CurrentManager.ProtectedAddListener( source, listener );
    }

        public static void RemoveListener(IUpdatableSettings source,
            IWeakEventListener handler)
        {
            if ( source == null )
            throw new ArgumentNullException("source");
              if ( handler == null )
            throw new ArgumentNullException("handler");

              CurrentManager.ProtectedRemoveListener(source, handler);
        }

    public static void AddListener( DataGridVirtualizingCollectionViewBase source, IWeakEventListener listener )
    {
      if( source == null )
        throw new ArgumentNullException( "source" );

      if( listener == null )
        throw new ArgumentNullException( "listener" );

      CurrentManager.ProtectedAddListener( source, listener );
    }

    public static void RemoveListener( DataGridCollectionView source, IWeakEventListener listener )
    {
      if( source == null )
        throw new ArgumentNullException( "source" );

      if( listener == null )
        throw new ArgumentNullException( "listener" );

      CurrentManager.ProtectedRemoveListener( source, listener );
    }

        /// <summary>
        /// Remove a listener to the given source's event.
        /// </summary>
        public static void RemoveListener(INotifyPropertyChanged source, IWeakEventListener listener, string propertyName)
        {
            /* for app-compat, allow RemoveListener(null, x) - it's a no-op (see Dev10 796788)
            if (source == null)
                throw new ArgumentNullException("source");
            */
            if (listener == null)
                throw new ArgumentNullException("listener");

            CurrentManager.PrivateRemoveListener(source, listener, propertyName);
        }

        /// <summary>
        /// Remove a listener to the given source's event. 
        /// </summary>
        public static void RemoveListener(ICollectionView source, IWeakEventListener listener)
        {
            /* for app-compat, allow RemoveListener(null, x) - it's a no-op (see Dev10 796788) 
            if (source == null)
                throw new ArgumentNullException("source"); 
            */ 
            if (listener == null)
                throw new ArgumentNullException("listener"); 

            CurrentManager.ProtectedRemoveListener(source, listener);
        }