Set "Auto" to GridView Colum Width when re-binding data to the GridView

The GridView Colum Width is a headache.

detailView.Columns.OfType<System.Windows.Controls.GridViewColumn>().ToList().ForEach(c => c.Width = c.ActualWidth);

detailView.Columns.OfType<System.Windows.Controls.GridViewColumn>().ToList().ForEach(c => c.Width = Double.NaN);


http://msdn.microsoft.com/en-us/library/system.windows.controls.gridviewcolumn.width.aspx

Double.NaN means auto-size