How many levels of nested data could be displayed using WebHierarchicalDataGrid? We need to display 4 levels. Does this control support?
All samples provided are using WebHierarchicalDataSource control for the source. How does WHDG work using WHDS? Does it get data for all childrens during the initial page load and then filters at the client-side using data relations?
Are there any samples that shows how to achieve the same hierarchy using datasets/datatables in code-behind?
I would appreciate your response on this!
Hey Lyuba,
Thank you for your response.
However, I don't see any load-on-demand happening at the child level with your sample code. The data for the child level is retrieved and loaded into the dataset along with the parent data.
This would definitely perform bad when the data at the lower levels are huge. In my case, I have 4 levels of hierarchy. The total records at the 4 level could run into thousands to millions. I would like to get data for the lower level only when the parent row is expanded using code-behind architecture. How do I achieve this?
I appreciate your response!
Thanks
I see a problem. The arrow for the user to expand at the parent level is visible only when I bind the child level data. That means, I have to bind all the 4 levels in order to override the RowIslandsPopulating event.
How can I display the arrow at the parent level by not binding the child levels so that I can manually perform load on demand for the childrens?
I would appreciate your response!