public MainViewModel()
        {
            DeleteRowCommand = new Command <TutorialModel>(execute: async(tutorialModel) => {
                await tutorials.DeleteTutorial(tutorialModel);

                LoadListTutorials();
            });

            DeleteAllRowCommand = new Command(execute: async() => {
                await tutorials.DeleteAllTutorials();
                LoadListTutorials();
            });

            UpdateRowCommand = new Command <TutorialModel>(execute: async(tutorialModel) => {
                await tutorials.UpdateTutorial(tutorialModel);

                LoadListTutorials();
            });

            InsertRowCommand = new Command(execute: async() => {
                await tutorials.InsertTutorial(new TutorialModel()
                {
                    TutorialTitulo = Titulo, TutorialDescripcion = Descripcion
                });
                Titulo      = "";
                Descripcion = "";

                LoadListTutorials();
            });


            LoadListTutorials();
        }