title: Open default mail client window with attachment using c#
body: <p>I have tried below ways to achieve this, </p>
  
  <pre><code>     1, mailto:
       2, Registrykeys  - @"HKEY_CLASSES_ROOT\mailto\shell\open\command", "", "none");
       3, proc.StartInfo.FileName = string.Format("\"{0}\"", Process.GetProcessesByName("OUTLOOK")[0].Modules[0].FileName);
  </code></pre>
  
  <p>But this always returns outlook window only. But I want to open default mail client window like out attached Image.</p>
  
  <p>Please share me your answers.</p>