title: writing byte array data into csv file
body: <p>I have a byte array which I am trying to write into a csv file.Something like this</p>
  
  <pre><code>string second=image.ToString();
  string csv = string.Format("{0},{1}\n", first,second);
  File.AppendAllText(filePath, csv);
  </code></pre>
  
  <p>where image is byte array.When I am trying to write in a file it shows system.byte[] instead of the byte array.How can I write the actual data.</p>