Multi-level master-details view

[Roger Criebaum]

I'm trying to create a grid that contains multiple nested master-details views. For example, the main Orders grid has one or more LineItems. Clicking the [+] opens the row to view a grid of LineItems. Each line item contains one or more InventoryItems. Clicking the [+] on the LineItems grid opens the row to view a grid of InventoryItems.

My data is similar to the following (this is only an example):

TOrder:

  OrderNumber

  OrderDate

  LineItems[]

LineItem:

  ItemNumber

  Price

  Inventory[]

Inventory:

  Location

  QuantityAvailable

The first level works fine. I can open an Order line with no issue and it displays the LineItems grid. However, when I click on the LineItem, I get a "null object" error at InitializeDetailsViewDataGrid.

I have set AutoGenerateRelations on both grids (Orders is set in the designer; LineItems is set in the OrdersGrid.AutoGeneratingRelations event).

I'm do not know what I am missing, or if I'm even going about this the right way. Please help!

Kevin

Attachment: ObjectGrid_f1d2b996.zip

[Mohanram Anbukkarasu]

Hi Kevin, 

Thanks for using Syncfusion support. 

We are currently working on this with high priority. We need two more working days to validate this. We will check and update the details on 13^th July 2020. 

We appreciate your patience until then. 

Regards, 

Mohanram A. 

[Mohanram Anbukkarasu]

Hi Kevin, 

Thanks for your patience.  

We have checked the reported issue “NullReferenceException occurs when expanding the grand child in DetailsView” and it is confirmed as a bug. We have logged a bug report in this regard. Please find the feedback link below. 

Feedback link : https://www.syncfusion.com/feedback/16038/nullreferenceexception-occurs-when-expanding-the-grand-child-in-detailsview  

Kindly update your current Syncfusion version. Based on that we will provide patch for the fix or we will include the fix in our NuGet releases.  

Regards, 

Mohanram A.