title: Sharing a file through my ios Application with UIActivityViewController
body: <p>I have some files that want to share with any application. I use this code </p>
  
  <pre><code>var fileDAta = NSData.FromFile(path);
  
  UIActivityViewController activityViewController = new UIActivityViewController
                          (new NSObject[]{ fileDAta }, null); //(items, null);
  
  PresentViewController(activityViewController,true,null);
  </code></pre>
  
  <p><img src="https://i.stack.imgur.com/qiXi0.png" alt="enter image description here"></p>
  
  <p>As you see, it should be more application but as a default, there is just the Mail App. it is the same for real device.. (I also installed Gmail and Outlook but there is not on the list or on the more list)</p>
  
  <p>Anyway,when i select the Mail, it cannot be attached ..</p>
  
  <p><img src="https://i.stack.imgur.com/vc2ST.png" alt="enter image description here"></p>
  
  <p>What I should change?</p>