public void LoadModifyMissionTypePage(MissionTypeDTO missionType)
        {
            IWindowManager          manager = new WindowManager();
            AddMissionTypeViewModel modify  = new AddMissionTypeViewModel(missionType);

            manager.ShowDialog(modify, null, null);
            Reload();
        }
        public void LoadAddMissionTypePage()
        {
            IWindowManager          manager = new WindowManager();
            AddMissionTypeViewModel add     = new AddMissionTypeViewModel();

            manager.ShowDialog(add, null, null);
            Reload();
        }