//private void LoadcmbKhachHang() //{ // KhachhangCtrl khctr = new KhachhangCtrl(); // cmbKhachHang.DataSource = khctr.GetData(); // cmbKhachHang.DisplayMember = "TenKH"; // cmbKhachHang.ValueMember = "MaKH"; // cmbKhachHang.SelectedIndex = 0; //} private void LoadcmbHH() { hanghoaCtrl hhctr = new hanghoaCtrl(); cmbHH.DataSource = hhctr.GetData(); cmbHH.DisplayMember = "SDTSim"; cmbHH.ValueMember = "MaSim"; cmbHH.SelectedIndex = 0; cmbHH.Text = ""; }