title: Sending Image from c# whatsapp api
body: <p>I'am trying to send image from whatsapp api c# application
  there is the code :</p>
  
  <pre><code>byte[] buffer = File.ReadAllBytes(op.FileName);
  wa.SendMessageImage(user.GetFullJid() + "@s.whatsapp.net", buffer, ApiBase.ImageType.GIF);
  MessageBox.Show("ok");
  </code></pre>
  
  <p>it gives me error :</p>
  
  <blockquote>
    <p>An unhandled exception of type 'System.Exception' occurred in
    WhatsAppApi.dll</p>
    
    <p>Additional information: BinTreeNodeReader->readListSize: Invalid token 231</p>
  </blockquote>