protected override void DataPortal_Update() { bool cancel = false; OnUpdating(ref cancel); if (cancel) return; if(OriginalOrderId != OrderId || OriginalLineNum != LineNum) { // Insert new child. LineItem item = new LineItem {OrderId = OrderId, LineNum = LineNum, ItemId = ItemId, Quantity = Quantity, UnitPrice = UnitPrice}; item = item.Save(); // Mark editable child lists as dirty. This code may need to be updated to one-to-one relationships. // Create a new connection. using (var connection = new SqlConnection(ADOHelper.ConnectionString)) { connection.Open(); FieldManager.UpdateChildren(this, connection); } // Delete the old. var criteria = new LineItemCriteria {OrderId = OriginalOrderId, LineNum = OriginalLineNum}; DataPortal_Delete(criteria); // Mark the original as the new one. OriginalOrderId = OrderId; OriginalLineNum = LineNum; OnUpdated(); return; } const string commandText = "UPDATE [dbo].[LineItem] SET [OrderId] = @p_OrderId, [LineNum] = @p_LineNum, [ItemId] = @p_ItemId, [Quantity] = @p_Quantity, [UnitPrice] = @p_UnitPrice WHERE [OrderId] = @p_OriginalOrderId AND [LineNum] = @p_OriginalLineNum; SELECT [OrderId], [LineNum] FROM [dbo].[LineItem] WHERE [OrderId] = @p_OriginalOrderId AND [LineNum] = @p_OriginalLineNum"; using (var connection = new SqlConnection(ADOHelper.ConnectionString)) { connection.Open(); using(var command = new SqlCommand(commandText, connection)) { command.Parameters.AddWithValue("@p_OriginalOrderId", this.OriginalOrderId); command.Parameters.AddWithValue("@p_OrderId", this.OrderId); command.Parameters.AddWithValue("@p_OriginalLineNum", this.OriginalLineNum); command.Parameters.AddWithValue("@p_LineNum", this.LineNum); command.Parameters.AddWithValue("@p_ItemId", this.ItemId); command.Parameters.AddWithValue("@p_Quantity", this.Quantity); command.Parameters.AddWithValue("@p_UnitPrice", this.UnitPrice); //result: The number of rows changed, inserted, or deleted. -1 for select statements; 0 if no rows were affected, or the statement failed. int result = command.ExecuteNonQuery(); if (result == 0) throw new DBConcurrencyException("The entity is out of date on the client. Please update the entity and try again. This could also be thrown if the sql statement failed to execute."); LoadProperty(_originalOrderIdProperty, this.OrderId); LoadProperty(_originalLineNumProperty, this.LineNum); } FieldManager.UpdateChildren(this, connection); } OnUpdated(); }