title: How can I display a Unicode string in the column header of a DataGridView?
body: <p>I'd like the column header to show a unicode string. </p>
  
  <p>I can do this:</p>
  
  <pre><code>dataGridView1.Columns[10].HeaderText = "\u2191"; // uparrow
  </code></pre>
  
  <p>...But it displays as a square box, not an up arrow as I intended. </p>
  
  <p>How can I do what I want?</p>