I have a task to evaluate Telerik GridView, but I'm stacked with a problem.
I need to create hierarchical RadGridView, but scenario where I will bind on startup Master and Childs Templates is not good for me, because most of the data in ChildGrid will be shown only on expanding, and in my scenario getting all the data is too expensive.
So I'm trying to populate Rows collection of ChildGridView template on ChildViewExpanding event.
And here where I have a problem. After first time I expand on + I have correct content, but then I collapse, and expand again, there is no content ( and in code Rows collection is properly filled with data ).
I found some threads on forum where other have similar issues, and conclusion was that Hierarchy can't be created dynamically and updated on expanding event.
What I'm missing here, or is this as designed?
Is there workaround for this( or way to simulate same behavior), or my best choice is to bring new GridView when user click master grid.
Thanks in advance.