title: Fixed header column width in gridview?
body: <p>I want to set header column width for grid view. I tried <code>HeaderStyle-Width="30px"</code>. But it is depending on Item columns. The column width is setting based on item value. But I want fixed width even if it has value or empty.</p>
  
  <p><img src="https://i.stack.imgur.com/xosnv.jpg" alt="alt text"></p>