public NewCategory(CategoryManager catMan)
 {
     this._catMan = catMan;
     InitializeComponent();
     catMan.Controller.Fillcombobox(CategoryModel.CategoryList, comboBox1);
     _controller = DatabaseController.Instance;
 }
        public CategoryManagerController()
        {
            Dbc = DatabaseController.Instance;
            catman = new CategoryManager(this);
            catman.ShowDialog();
            

            if (catman.DialogResult == DialogResult.OK)
            {
                //update database
            }
        }
 public void OpenCategoryManager()
 {
     this.CategoryManagerController = new CategoryManagerController();
     this.CategoryManager = new CategoryManager(this.CategoryManagerController);
 }