private void FormPhong_Load(object sender, EventArgs e) { button2.Enabled = false; button3.Enabled = false; gcPhong.DataSource = pBUS.LoadPhong(); lUpLoaiPhong.Properties.DataSource = loaiphong.LoadLoaiPhong(); lUpLoaiPhong.Properties.DisplayMember = "TenPhong"; lUpLoaiPhong.Properties.ValueMember = "MaLoai"; repositoryItemLookUpEdit1.DataSource = loaiphong.LoadLoaiPhong(); repositoryItemLookUpEdit1.DisplayMember = "TenPhong"; repositoryItemLookUpEdit1.ValueMember = "MaLoai"; }