Hello, I need help....
To create a 3 - levels of the data hierarchy I implemented suggested in the forum posts.
I have a problem with the third level.
As you can see in the picture I was able to populate first two levels.
When I click to open third layer I got generic error : Object reference not set to an instance of an object.
Where might be the error and where can I track it? I just suspect that this is a problem with radGridView_AcctSummary.Relations.Add(ch_relation);
When I click on the "+" button to open the next layer ChildViewExpanding event goes through just fine .... but right after this event I still have this error .. can not fix it ...
@Victoria, can you please post the contents of the ChildViewExpanding event? I believe that you are doing something in that event, and because of the async nature of the grid, it is throwing an exception later on. For testing this, just use a timer and fire it after 50 ms and move all your code in the tick event.
Hope this helps, if you have any other questions or comments, please let me know,
MessageBox.Show(ex.Message + "\n St Tr: " + ex.StackTrace, ex.Source, MessageBoxButtons.OK,
I believe that this is a problem with the third level of relation ...
During my testing I tried to plug in second and third templates making them as first and second levels of relation .. works fine.
It means that this is something with relation between the second and third levels .. Should I specify somewhere in properties of the gridview that this gridview suppose to have more then 2 levels of relation?
I am facing performance issue with hierarchy grid. Whenever there are few hundred records as a child, and when user tries to open that node, it takes few seconds to open up. Specifically i have noted that it happens when open hierarchy of last master record.
Is performance an issue when data is shown in hierarchy format? Kindly guide.
Dess | Tech Support Engineer, Principal
answered on 28 Mar 2014, 11:20 AM
Thank you for contacting Telerik Support.
I was able to reproduce the performance problem with our RadGridView. I confirm that it is an issue with Object Relational Hierarchy Mode. I have logged it in ourFeedback Portal. You can track its progress, subscribe for status changes and add your vote/comment to it on the following link - Feedback Item.