public void DeleteScenario(int id)
 {
     using (ScenarioRepository _scenarioRepo = new ScenarioRepository())
     {
         _scenarioRepo.DeleteScenario(id);
     }
 }
        /// <summary> Löscht das ausgewählte Szenario </summary>
        public void Delete()
        {
            /// <summary> Index des ausgewählten Szenarios </summary>
            int      index    = AllScenarios.IndexOf(AllScenarios.Where(p => p.IsSelected == true).FirstOrDefault());
            Scenario scenario = AllScenarios.ElementAt(index);

            _scenarioRepository.DeleteScenario(scenario);
            BlueBlue   = null;
            BlueRed    = null;
            BlueGreen  = null;
            BlueYellow = null;

            RedBlue   = null;
            RedRed    = null;
            RedGreen  = null;
            RedYellow = null;

            GreenBlue   = null;
            GreenRed    = null;
            GreenGreen  = null;
            GreenYellow = null;

            YellowBlue         = null;
            YellowRed          = null;
            YellowGreen        = null;
            YellowYellow       = null;
            IsListItemSelected = false;
            base.OnPropertyChanged("IsListItemSelected");
        }