public static void Run() { var configuration = new Configuration(Common.MyAppSid, Common.MyAppKey); var apiInstance = new AnnotateApi(configuration); try { // Set request. var request = new GetExportRequest() { filePath = "Annotationdocs\\ten-pages.pdf", password = null, annotatedPages = true, annotationTypes = null, firstPage = 1, lastPage = 2 }; Stream response = apiInstance.GetExport(request); Console.WriteLine("Expected response type is Stream: Document Length: " + response.Length.ToString()); using (var fileStream = File.Create("D:\\Results-ten-pages.pdf")) { response.Seek(0, SeekOrigin.Begin); response.CopyTo(fileStream); } } catch (Exception e) { Console.WriteLine("Exception while calling Annotation AnnotateApi: " + e.Message); } }