private void btnThayDoiKhachHang_Click(object sender, EventArgs e) { folderKhachHang.ChonKhachHang chonKhachHang = new folderKhachHang.ChonKhachHang(false); XtraDialogArgs args = new XtraDialogArgs(caption: "Caption", content: chonKhachHang, buttons: new DialogResult[] { DialogResult.OK, DialogResult.Cancel }); args.Showing += Args_Showing_ChonKH; args.Caption = "Default Text"; args.Buttons = new DialogResult[] { DialogResult.OK, DialogResult.Cancel }; switch (XtraDialog.Show(args)) { case DialogResult.OK: khachHang = chonKhachHang.LayKhachHangDaChon(); txtMaKH.EditValue = khachHang.MaKH; txtLoaiKH.EditValue = LoaiKhachHangBUS.LayLoaiKhachHang(khachHang.MaLoaiKH).TenLoaiKH; txtEmail.EditValue = khachHang.Email; txtSDT.EditValue = khachHang.SDT; txtTenKH.EditValue = khachHang.TenKH; txtDiaChi.EditValue = khachHang.DiaChi; txtNgaySinh.EditValue = khachHang.NgaySinh; DatPhongBUS.UpdateKhachHang(datPhong.MaDatPhong, khachHang.MaKH); break; case DialogResult.Cancel: break; default: break; } }