Event which is fired after a treegrid row(for the most parent layout) is collapsed. Use args.owner to access the treegrid object. Use args.row to access a row element(for the most parent layout) that was collapsed(jQuery representation). Use args.fixedRow to access a (top most parent fixed)row element that was collapsed(jQuery representation). If there aren't fixed columns it is undefined. Use args.dataBoundDepth to access the databound depth level of the topmost treegrid row that was collapsed.
Target Platforms: Windows 8.1, Windows 8.1, Windows 8, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
