public void AmendActivity(string activity_name, DateTime activity_starttime)
 {
     AAVM             = new Activity_AddAction_ViewModel(activity_name, activity_starttime, WrapPanel_Viewphoto); //資料綁定的方式!!
     this.DataContext = AAVM;
 }
 public void AddNewActivity(int supervisionID)
 {
     AAVM             = new Activity_AddAction_ViewModel(supervisionID, WrapPanel_Viewphoto); //資料綁定的方式!!
     this.DataContext = AAVM;
 }