public void write() { MemoryStream readStream = new MemoryStream(sampleData, false); MapMarker[] mapMarkers = MapMarker.ReadFile(readStream); MemoryStream writeStream = new MemoryStream(); MapMarker.WriteFile(mapMarkers, writeStream); MemoryStream rereadStream = new MemoryStream(writeStream.ToArray(), false); MapMarker[] rereadMapMarkers = MapMarker.ReadFile(rereadStream); testMarkers(rereadMapMarkers); }