System.Data.DataRow.AcceptChanges C# (CSharp) Method

        public void AcceptChanges()
        {
            long logScopeId = DataCommonEventSource.Log.EnterScope("<ds.DataRow.AcceptChanges|API> {0}", _objectID);
            try
            {
                EndEdit();

                if (RowState != DataRowState.Detached && RowState != DataRowState.Deleted)
                {
                    if (_columns.ColumnsImplementingIChangeTrackingCount > 0)
                    {
                        foreach (DataColumn dc in _columns.ColumnsImplementingIChangeTracking)
                        {
                            object value = this[dc];
                            if (DBNull.Value != value)
                            {
                                IChangeTracking tracking = (IChangeTracking)value;
                                if (tracking.IsChanged)
                                {
                                    tracking.AcceptChanges();
                                }
                            }
                        }
                    }
                }
                _table.CommitRow(this);
            }
            finally
            {
                DataCommonEventSource.Log.ExitScope(logScopeId);
            }
        }

        private void btnSave_Click(object sender, EventArgs e)
        {
            try
            {
                txtID.Text = txtID.Text.ToUpper();
                if (ValidData())
                    switch (vAction)
                    {
                        case action.Insert:
                            var obj = new LObjectType();
                            obj.SName = Utility.sDbnull(txtName.Text);
                            obj.SDesc = Utility.sDbnull(txtDesc.Text);
                            obj.IsNew = true;
                            obj.Save();

                            drList = dtList.NewRow();
                            drList[LObjectType.Columns.Id] =
                                LObjectType.CreateQuery().GetMax(LObjectType.Columns.Id);
                            ApplyData2Datarow();
                            dtList.Rows.InsertAt(drList, 0);
                            dtList.AcceptChanges();

                            txtID.Text = Utility.sDbnull(drList[LObjectType.Columns.Id]);
                            vAction = action.Update;
                            break;
                        case action.Update:
                            new Update(LObjectType.Schema.Name).Set(LObjectType.Columns.SName).EqualTo(txtName.Text).
                                Set(LObjectType.Columns.SDesc).EqualTo(txtDesc.Text).
                                Where(LObjectType.Columns.Id).IsEqualTo(Utility.Int32Dbnull(txtID.Text)).
                                Execute();
                            ApplyData2Datarow();
                            drList.AcceptChanges();
                            break;
                    }
            }
            catch (Exception ex)
            {
                Utility.ShowMsg(ex.Message);
            }
        }