Created a container object to house messages, operation status and the rows added for the methods that add new items and update existing items in the database.

AdvertsingProfitControl/AdvertisingProfitControlTableHelper.cs

@@ -299,12 +299,15 @@ namespace AdvertsingProfitControl
         InvoiceNote = 6,
         IsDirty = 7
     }
-
+    /// <summary>
+    /// TODO: Push into a stand alone object.
+    /// </summary>
     public enum TrimmingOperationResult
     {
         FailedToTrim = 0,
         CreatedNewInsertionTable = 1,
         CreatedUpdateTable = 2,
-        CreatedNewInsertionAndUpdateTables = 3
+        CreatedNewInsertionAndUpdateTables = 3,
+        NoChangesRequired = 4
     }
 }