Any plans for an expand/collapse all feature for RadzenDataGrid's grouping?
If not already I would like to request that as a feature.
Maybe the GroupResult items found in RadzenDataGrid.GroupedPagedView could have a modifiable "IsExpanded" property that I could manage myself?
Alternative could be something like exposing the collection of RadzenDataGridGroupRows with a modifiable "IsExpanded" property that I could manage myself.
Another alternative, albeit less flexible, could be a simple ExpandAllGroups()/CollapseAllGroups() function on the RadzenDataGrid itself