title: DataGridColumnHeader ContextMenu programmatically
body: <p>I have this code in View.cs </p>
  
  <pre><code>var contextMenu = this.dataGridFacade.GiveContextMenuForDataGrid(this.DataGridAllJobs);
  
  this.DataGridAllJobs.ContextMenu = contextMenu;
  </code></pre>
  
  <p>But I want to add this context menu for header only. Is it possible?</p>