I have added an Expand / Collapse All button to my RadGrid, which uses a 3-level hierarchy. Each level uses load mode ServerOnDemand. But the problem is that only the first level gets expanded.
I have adapted the CodeLibrary example http://www.telerik.com/community/code-library/aspnet-ajax/grid/expand-collapse-hierarchy-client-side-on-external-control-click.aspx
See below my adapted page - can anyone see why only the first level gets expanded? Even if I hard code item.Expanded = True it still doesn't work.