How to change column header's background color when using WPF datagrid

Question

How to change column header\'s background color when using WPF datagrid? Need to modify xaml directly?

Answer 1

Style style = new Style(typeof(System.Windows.Controls.Primitives
    .DataGridColumnHeader));
style.Setters.Add(new Setter(ToolTipService.ToolTipProperty
    ,"Your tool tip here"));
style.Setters.Add(new Setter { Property = BackgroundProperty, Value 
    = Brushes.Yellow });


dgExcelSheet.Columns[1].HeaderStyle = style;