title: Not able to Drag files from external devices(phone and pen drive) to WPF grid
body: <p>I have implemented drag and drop functionality for rad grid view in WPF with telerik controls, I am able to drag files from local system but not able to drag files from external devices like phone and pendrive</p>
  
  <p>Below is the code used</p>
  
  <pre><code> private void OnElementDragOver(object sender, 
   Telerik.Windows.DragDrop.DragEventArgs e)
   {
      var files = (IEnumerable&lt;string&gt;)(e.Data as                                  
      DataObject).GetData(System.Windows.DataFormats.FileDrop);
          if (files != null)
          {
              if (Resources.Enums.IsImageDrog(files))
              {
                  string[] contact = (e.Data as 
                  DataObject).GetData(System.Windows.DataFormats.FileDrop) as 
                  string[];
                  if (this.DataContext is TestResultLibraryVM &amp;&amp; contact != 
                  null)
                  (this.DataContext as 
                  TestResultLibraryVM).AddDroped(contact.OfType&lt;string&gt; 
                  ().ToList());                    
              }     
          }
    }
  </code></pre>