private void AddProductsUserControl_Load(object sender, EventArgs e) { CategoriesORM categoriesORM = new CategoriesORM(); cmbCategories.DataSource = categoriesORM.Select(); cmbCategories.DisplayMember = "Kateqoriya"; cmbCategories.ValueMember = "Id"; UnitTypesORM unitTypesORM = new UnitTypesORM(); cmbUnitType.DataSource = unitTypesORM.Select(); cmbUnitType.DisplayMember = "Vahid Növü"; cmbUnitType.ValueMember = "Id"; }