title: How to check if Uri has sftp scheme, using standard methods in .Net?
body: <p>I have address - sftp://someserver:1234/files/file.txt</p>
  
  <p>For example to check if Uri has Ftp scheme: </p>
  
  <pre><code>var uri = new Uri(address);
  if (uri.Scheme == Uri.UriSchemeFtp)
  {
      //...
  }
  </code></pre>
  
  <p>But there is no default scheme for sftp. 
  How can I check it without string parsing? 
  Only using standard methods.</p>