title: ICryptoTransform.TransformFinalBlock vs ICryptoTransform.TransformBlock
body: <p>I am Learning cryptography in .net, why method 1 works while 2 fired argument exception.
  See <a href="https://stackoverflow.com/questions/2006394/symmetric-algorithm-exception">Symmetric Algorithm exception</a>
  for a complete code</p>
  
  <p>1- ICryptoTransform.TransformFinalBlock</p>
  
  <p>2- ICryptoTransform.TransformBlock</p>
  
  <p>Thanks</p>