Animated Icons/Images in WPF

MediaElement Option
<MediaElement Source="animated.gif"/>

MSDN Article on Pack URI's

WPF Navigation OverView

file:///C:/Users/david/Desktop/coding_ref/dotNET/WPF/WPF%20Navigation%20-%20Paul%20Stovell.htm

Microsoft Inductive User Interface Guidelines

Microsoft Inductive User Interface Guidelines

DevExpress XtraGrid - Group by Column - Enable/Disable

assuming you have

DevExpress.XtraGrid.GridControl gridControl;
DevExpress.XtraGrid.Views.Grid.GridView gridView;

to enable grouping capability
gridView.OptionsView.ShowGroupPanel = true

to disable
gridView.OptionsView.ShowGroupPanel = false