Unreadable result when loading CSV into datatable

The old Microsoft.Jet.OLEDB.4.0 provider doesn't support UTF-8 text files with BOM.

Let's change the way that we save CSV with extractor.

Instead of using SaveCSVToFile(), use the following:

using (Stream fileStream = File.OpenWrite(outputFileName))
   csvExtractor.SaveCSVToStream(fileStream);

This construction will save UTF-8 file without BOM and solve the issue.