14     }

    14     }

    15 

    15 

    16     public class SyncSourceEventArg : RoutedEventArgs

    16     public class SyncSourceEventArg : RoutedEventArgs

    17     {

    17     {

    18         public SyncSourceState OrignalState { get; set; }

    18         public SyncSourceState OrignalState { get; set; }

    19     }

    20     }

    20 

    21 

    21     public delegate void SyncSourceEventHandler(Object source, SyncSourceEventArg e);

    22     public delegate void SyncSourceEventHandler(Object source, SyncSourceEventArg e);

    22 

    23 

    23     public interface ISyncSource

    24     public interface ISyncSource