title: DataGridViewComboBoxColumn droppeddown on KeyStroke
body: <p>I have a DataGridViewComboBoxColumn with <code>DropDownStyle = ComboBoxStyle.Simple</code></p>
  
  <p>How can I force the dropdown to expand on a keystroke?</p>
  
  <p>I have tried putting <code>((ComboBox)?).DroppedDown = true;</code> in several places without solution</p>