Delphi - applying Delta to a TClientDataSet

Question

My application uses a TClientDataSet and a TDataSource set. No DataBase involved. The TClientDataSet is saved in XML format. I save the TClientDataSet using the DataSet.SaveToFile method, and doying so, the saved file retains the Delta changes. I can't use the DataSet.UpplyUpdates method, because as stated before, there is no DataBase hence there is no Provider also.

DataSet.SaveToFile ('SavedFile.XML') // this retains Delta changes

DataSet.ApplyUpdates (0) // can't use it (no Provider)

My question is: how can I force to apply the Delta changes to the TClientDataSet before saving it to a file? If a save to a binary format, the Delta changes would be applied?. Note: closing and subsequently open the TClientDataSet does not work either.

Answer 1

To erase the saved changes just call TCustomClientDataSet.MergeChangeLog.

If you do not need the change log at all, set TCustomClientDataSet.LogChanges to False (True is default value) just after open the dataset.