title: Drag & Drop from Windows Explorer into my application’s TextBox
body: <p>Why is the dragdrop event never entered?</p>
  
  <pre><code>private void textBox1_DragDrop(object sender, DragEventArgs e)
  {
      Array a = (Array)e.Data.GetData(DataFormats.FileDrop);
  
      e.Effect = DragDropEffects.All;
      Debug.WriteLine("were in dragdrop");
  }
  
  private void textBox1_DragEnter(object sender, DragEventArgs e)
  {
      if (e.Data.GetDataPresent(DataFormats.FileDrop, false) == true)
      {
          e.Effect = DragDropEffects.All;
      }
  }
  </code></pre>