title: How to delete DataGridView Row by pressing DeleteKey?
body: <p>I have a DataGridView on a form.</p>
  
  <p>I want to delete rows from the grid by pressing the delete key, but delete key seems to be dead, until I enter into <code>CellEditMode</code>.</p>
  
  <p>If I enter to <code>CellEditMode</code> then the delete key works, but obviously only for deleting cell contents, not for deleting rows.</p>
  
  <p>The DataGridView has <code>AllowUserToDeleteRow = true</code> and the grid is unbound.</p>
  
  <p>I have other grids where this function works correctly, but can't see the difference.</p>