public void LoadTypesRepairs() { List <TypeRepair> typesRepairs = sql.getTypesAll(); comboBox_TypeRepair.DataSource = typesRepairs; comboBox_TypeRepair.DisplayMember = "nameType"; comboBox_TypeRepair.ValueMember = "nameType"; // comboBox_TypeRepair.Text = "Не гарантийный"; typesRepairs = null; }