private void gridView1_ValidateRow(object sender, DevExpress.XtraGrid.Views.Base.ValidateRowEventArgs e)
        {
            try
            {
                GridView view = sender as GridView;

                //validation
                GridColumn sttCol = view.Columns["STT"];
                GridColumn ma_nhomCol = view.Columns["MA_NHOM"];
                string stt = Utils.CStrDef(view.GetRowCellValue(e.RowHandle, sttCol), "");
                string ma_nhom = Utils.CStrDef(view.GetRowCellValue(e.RowHandle, ma_nhomCol), "");
                if (stt.Trim().Length == 0 || ma_nhom.Trim().Length == 0 )
                {
                    e.Valid = false;
                    if (stt.Trim().Length == 0)
                        view.SetColumnError(sttCol, "STT không được rổng");
                    if (ma_nhom.Trim().Length == 0)
                        view.SetColumnError(ma_nhomCol, "Mã nhóm không được rổng");

                    return;
                }

                _KTDGBTheoVungRepo = new KTDGBTheoVungRepo();
                //Kiểm tra đây là dòng dữ liệu mới hay cũ, nếu là mới thì mình insert
                if (view.IsNewItemRow(e.RowHandle))
                {
                    //e.RowHandle trả về giá trị int là thứ tự của dòng hiện tại
                    KT_DGBTheoVung obj = new KT_DGBTheoVung();
                    obj.STT = Utils.CIntDef(view.GetRowCellValue(e.RowHandle, "STT"), 0);
                    DateTime? temp = null;
                    if (Utils.CDateDef(view.GetRowCellValue(e.RowHandle, "TU_NGAY"), DateTime.MinValue) != DateTime.MinValue)
                        temp = Utils.CDateDef(view.GetRowCellValue(e.RowHandle, "TU_NGAY"), DateTime.MinValue);
                    obj.TU_NGAY = temp;
                    temp = null;
                    if (Utils.CDateDef(view.GetRowCellValue(e.RowHandle, "DEN_NGAY"), DateTime.MinValue) != DateTime.MinValue)
                        temp = Utils.CDateDef(view.GetRowCellValue(e.RowHandle, "DEN_NGAY"), DateTime.MinValue);
                    obj.DEN_NGAY = temp;
                    obj.MA_NHOM = Utils.CStrDef(view.GetRowCellValue(e.RowHandle, "MA_NHOM"), "");
                    obj.TEN_NHOM = Utils.CStrDef(view.GetRowCellValue(e.RowHandle, "TEN_NHOM"), "");
                    obj.MA_DM = Utils.CStrDef(view.GetRowCellValue(e.RowHandle, "MA_DM"), "");
                    obj.TEN_DM = Utils.CStrDef(view.GetRowCellValue(e.RowHandle, "TEN_DM"), "");
                    obj.DON_VI = Utils.CStrDef(view.GetRowCellValue(e.RowHandle, "DON_VI"), "");
                    obj.CONG_THEM = Utils.CDblDef(view.GetRowCellValue(e.RowHandle, "CONG_THEM"), 0);
                    obj.DON_GIA = Utils.CDblDef(view.GetRowCellValue(e.RowHandle, "DON_GIA"), 0);
                    obj.TRANG_THAI = Utils.CIntDef(view.GetRowCellValue(e.RowHandle, "TRANG_THAI"), 0);
                    obj.DANH_DAU = Utils.CStrDef(view.GetRowCellValue(e.RowHandle, "DANH_DAU"), "");

                    _KTDGBTheoVungRepo.Create(obj);

                }
                //Cũ thì update
                else
                {
                    int id = Utils.CIntDef(view.GetRowCellValue(gridView1.FocusedRowHandle, "ID"), 0);
                    KT_DGBTheoVung obj = _KTDGBTheoVungRepo.GetById(id);
                    if (obj != null)
                    {
                        obj.STT = Utils.CIntDef(view.GetRowCellValue(e.RowHandle, "STT"), 0);
                        DateTime? temp = null;
                        if (Utils.CDateDef(view.GetRowCellValue(e.RowHandle, "TU_NGAY"), DateTime.MinValue) != DateTime.MinValue)
                            temp = Utils.CDateDef(view.GetRowCellValue(e.RowHandle, "TU_NGAY"), DateTime.MinValue);
                        obj.TU_NGAY = temp;
                        temp = null;
                        if (Utils.CDateDef(view.GetRowCellValue(e.RowHandle, "DEN_NGAY"), DateTime.MinValue) != DateTime.MinValue)
                            temp = Utils.CDateDef(view.GetRowCellValue(e.RowHandle, "DEN_NGAY"), DateTime.MinValue);
                        obj.DEN_NGAY = temp;
                        obj.MA_NHOM = Utils.CStrDef(view.GetRowCellValue(e.RowHandle, "MA_NHOM"), "");
                        obj.TEN_NHOM = Utils.CStrDef(view.GetRowCellValue(e.RowHandle, "TEN_NHOM"), "");
                        obj.MA_DM = Utils.CStrDef(view.GetRowCellValue(e.RowHandle, "MA_DM"), "");
                        obj.TEN_DM = Utils.CStrDef(view.GetRowCellValue(e.RowHandle, "TEN_DM"), "");
                        obj.DON_VI = Utils.CStrDef(view.GetRowCellValue(e.RowHandle, "DON_VI"), "");
                        obj.CONG_THEM = Utils.CDblDef(view.GetRowCellValue(e.RowHandle, "CONG_THEM"), 0);
                        obj.DON_GIA = Utils.CDblDef(view.GetRowCellValue(e.RowHandle, "DON_GIA"), 0);
                        obj.TRANG_THAI = Utils.CIntDef(view.GetRowCellValue(e.RowHandle, "TRANG_THAI"), 0);
                        obj.DANH_DAU = Utils.CStrDef(view.GetRowCellValue(e.RowHandle, "DANH_DAU"), "");

                        _KTDGBTheoVungRepo.Update(obj);
                    }

                }
                Load_Data();
            }
            catch (Exception ex)
            {
                e.Valid = false;
                MessageBox.Show(ex.Message, "Lỗi", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }
        private void Save_Duplicate()
        {
            try
            {                
                if (MessageBox.Show("Bạn có muốn copy dòng này thành dòng mới?", "Thông báo", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
                {
                    _KTDGBTheoVungRepo = new KTDGBTheoVungRepo();
                    KT_DGBTheoVung obj = new KT_DGBTheoVung();
                    obj.STT = Utils.CIntDef(gridView1.GetRowCellValue(gridView1.FocusedRowHandle, "STT"), 0);
                    DateTime? temp = null;
                    if (Utils.CDateDef(gridView1.GetRowCellValue(gridView1.FocusedRowHandle, "TU_NGAY"), DateTime.MinValue) != DateTime.MinValue)
                        temp = Utils.CDateDef(gridView1.GetRowCellValue(gridView1.FocusedRowHandle, "TU_NGAY"), DateTime.MinValue);
                    obj.TU_NGAY = temp;
                    temp = null;
                    if (Utils.CDateDef(gridView1.GetRowCellValue(gridView1.FocusedRowHandle, "DEN_NGAY"), DateTime.MinValue) != DateTime.MinValue)
                        temp = Utils.CDateDef(gridView1.GetRowCellValue(gridView1.FocusedRowHandle, "DEN_NGAY"), DateTime.MinValue);
                    obj.DEN_NGAY = temp;
                    obj.MA_NHOM = Utils.CStrDef(gridView1.GetRowCellValue(gridView1.FocusedRowHandle, "MA_NHOM"), "");
                    obj.TEN_NHOM = Utils.CStrDef(gridView1.GetRowCellValue(gridView1.FocusedRowHandle, "TEN_NHOM"), "");
                    obj.MA_DM = Utils.CStrDef(gridView1.GetRowCellValue(gridView1.FocusedRowHandle, "MA_DM"), "");
                    obj.TEN_DM = Utils.CStrDef(gridView1.GetRowCellValue(gridView1.FocusedRowHandle, "TEN_DM"), "");
                    obj.DON_VI = Utils.CStrDef(gridView1.GetRowCellValue(gridView1.FocusedRowHandle, "DON_VI"), "");
                    obj.CONG_THEM = Utils.CDblDef(gridView1.GetRowCellValue(gridView1.FocusedRowHandle, "CONG_THEM"), 0);
                    obj.DON_GIA = Utils.CDblDef(gridView1.GetRowCellValue(gridView1.FocusedRowHandle, "DON_GIA"), 0);
                    obj.TRANG_THAI = Utils.CIntDef(gridView1.GetRowCellValue(gridView1.FocusedRowHandle, "TRANG_THAI"), 0);
                    obj.DANH_DAU = Utils.CStrDef(gridView1.GetRowCellValue(gridView1.FocusedRowHandle, "DANH_DAU"), "");

                    _KTDGBTheoVungRepo.Create(obj);
                    MessageBox.Show("Đã copy dòng này vào cuối bảng!", "Thông báo", MessageBoxButtons.OK, MessageBoxIcon.Information);
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, "Lỗi", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }
 partial void InsertKT_DGBTheoVung(KT_DGBTheoVung instance);
 partial void UpdateKT_DGBTheoVung(KT_DGBTheoVung instance);
 partial void DeleteKT_DGBTheoVung(KT_DGBTheoVung instance);