According to GDAL's official site, GDAL 2.1 OGRDataSource class is deprecated and GDALDataset should be used. Methods like OGR_DS_GetLayerByName should be replaced by GDALDatasetGetLayerByName().
Now in GDAL for C#, latest 2.1.0 version, I cannot find this new methods in the Gdal.Dataset class.
Where did they go?