title: WPF Datagrid cell tooltip
body: <p>I have a WPF 4.0 <code>DataGrid</code> displaying data from a <code>LINQ to Entities</code> query. The query returns an anonymous list so the <code>DataGrid</code> has its <code>AutoGenerateColumns</code> property set to true.
  How can I display <code>ToolTips</code> for the column cells?</p>