System.IO.MemoryStream.GetBuffer C# (CSharp) Method

        public virtual byte[] GetBuffer()
        {
            if (!_exposable)
                throw new UnauthorizedAccessException(SR.UnauthorizedAccess_MemStreamBuffer);
            return _buffer;
        }

    public void Test_Image_ByteArray()
    {
      using (Image img = Image.FromFile(Files.Coders.PageTIF))
      {
        byte[] bytes = null;
        using (MemoryStream memStream = new MemoryStream())
        {
          img.Save(memStream, ImageFormat.Tiff);
          bytes = memStream.GetBuffer();
        }

        using (MagickImage image = new MagickImage(bytes))
        {
          image.CompressionMethod = CompressionMethod.Group4;

          using (MemoryStream memStream = new MemoryStream())
          {
            image.Write(memStream);
            memStream.Position = 0;

            using (MagickImage before = new MagickImage(Files.Coders.PageTIF))
            {
              using (MagickImage after = new MagickImage(memStream))
              {
                Assert.AreEqual(0.0, before.Compare(after, ErrorMetric.RootMeanSquared));
              }
            }
          }
        }
      }
    }