title: Document opening issue in Windows Phone 8.1
body: <p><img src="https://i.stack.imgur.com/LUvan.jpg" alt="enter image description here"><img src="https://i.stack.imgur.com/joxdF.jpg" alt="enter image description here"></p>
  
  <p>I am creating Windows Phone 8.1 application, I am trying to open document using launcher, but getting exception, and document  is not MS OFFICE document, it is created in other software. Here is my code.</p>
  
  <pre><code>string file = "readme.txt";
  IsolatedStorageFile isf = IsolatedStorageFile.GetUserStoreForApplication();
  
  if (isf.FileExists(file))
  {
     isf.DeleteFile(file);
  }
  
  var filerun = await ApplicationData.Current.LocalFolder.CreateFileAsync(file);
  await Launcher.LaunchFileAsync(await ApplicationData.Current.LocalFolder.GetFileAsync(file));
  </code></pre>
  
  <p>I am getting error like this:</p>
  
  <pre><code>"Can't be Open, File Format doesn't recognize"
  </code></pre>
  
  <p>and sometimes like this:</p>
  
  <pre><code>"Document has been damaged"
  </code></pre>
  
  <p>I do not know how to deal with this, I am stuck here, Any help would be greatly appreciated.</p>