Enum ColorMode

public enum ColorMode
    {
        RGB,
        HSL,
        CMYK
    }
For better readability, consider adding an empty line after the closing brace of an enum to improve visual separation between declarations.
    public enum ColorMode
    {
        RGB,
        HSL,
        CMYK
    }

string dataDir = RunExamples.GetDataDir_LoadingAndSaving();
   Document oneFile = new Document(dataDir + "Aspose.one");
   dataDir += "SaveAsGrayscaleImage_out.png";
   oneFile.Save(dataDir, new ImageSaveOptions { SaveFormat = SaveFormat.Png, ColorMode = ColorMode.GrayScale });

string dataDir = RunExamples.GetDataDir_LoadingAndSaving();
   Document oneFile = new Document(Path.Combine(dataDir, "Aspose.one"));
   var dst = Path.Combine(dataDir, "SaveToTiffUsingCcitt3Compression.tiff");
   oneFile.Save(dst, new ImageSaveOptions(SaveFormat.Tiff)
   {
      ColorMode = ColorMode.BlackAndWhite,
      TiffCompression = TiffCompression.Ccitt3
   });

string dataDir = RunExamples.GetDataDir_LoadingAndSaving();
   Document oneFile = new Document(dataDir + "Aspose.one");
   dataDir += @"\SaveToBinaryImageUsingOtsuMethod_out.png";
   oneFile.Save(dataDir, new ImageSaveOptions(SaveFormat.Png)
   {
      ColorMode = ColorMode.BlackAndWhite,
      BinarizationOptions = new ImageBinarizationOptions()
      {
         BinarizationMethod = BinarizationMethod.Otsu,
      }
   });

string dataDir = RunExamples.GetDataDir_LoadingAndSaving();
   Document oneFile = new Document(dataDir + "Aspose.one");
   dataDir += "SaveToBinaryImageUsingFixedThreshold_out.png";
   oneFile.Save(dataDir, new ImageSaveOptions(SaveFormat.Png)
                                               {
                                                   ColorMode = ColorMode.BlackAndWhite,
                                                   BinarizationOptions = new ImageBinarizationOptions()
                                                                             {
                                                                               BinarizationMethod = BinarizationMethod.FixedThreshold,
                                                                               BinarizationThreshold = 123
                                                                             }
                                               });