381         {

   381         {

   382             BookTimeLineVM BookTimeLineVM = (BookTimeLineVM)e.Source;

   382             BookTimeLineVM BookTimeLineVM = (BookTimeLineVM)e.Source;

   383 

   383 

   384             if (BookTimeLineVM == this.SelectedBookVM)

   384             if (BookTimeLineVM == this.SelectedBookVM)

   385             {

   385             {

   386                 UpdateAnnotation();

   387                 UpdateAnnotation();

   387             }

   388             }

   388         }

   389         }

   389 

   390 

   390         public void UpdateAnnotation()

   391         public void UpdateAnnotation()