title: Unable to find the correct namespace?
body: <p>I want to encrypt my XML file with Symmetric Keys in C#</p>
  
  <p>but, when i am trying to declare this:</p>
  
  <pre><code>EncryptedXml eXml = new EncryptedXml();
  </code></pre>
  
  <p>it's give me error: "The namespace not found". 
  but i am unable to find the correct namespace for that. I have already tried with <code>System.Security.Cryptography.Xml</code> but it doesn't works because it's give <code>Xml</code> is not exist in this namaspace. </p>
  
  <p>Can anyone tell me the namespace for <code>EncryptedXml</code>?</p>
  
  <p>Thank you..!!!</p>