Intercept "Expand" event for nested views and process the expansion by hand

[Sal]

I am having a bunch of issues trying to use data sources with radGrid nested views, therefore, I was wondering if there is an event I can intercept when clicking on the expand arrow so that I can, myself, retreive the data and display it for that particular item.

Also, when I do this, where should I store the information I get on other expanded items? Use a generic list and put it in the view state? If so, how would I render the whole grid when the postback is received? How do I walk through the hierarchy and update those items which where previously expanded?

Thanks

Sal

[Tsvetina]

Hello Sal,

I would advise you to consider using the DetailTableDataBind event of RadGrid which is used for manual binding in hierarchy. You can see the following demo and help article and let us know if you have any remaining questions:
Programmatic Binding
Hierarchical data-binding using DetailTableDataBind event

Kind regards,
Tsvetina
the Telerik team

[Sal]

I tried that but the event does not fire at all for me. I have created a support ticket since this problem has taken way to long (ticket # 450768) .

Thank you.

Sal

[Tsvetina]

Hello Sal,

From what I understand, the issue you had with binding the hierarchy was solved in another thread. Therefore, I am closing that one and posting the link to the other for anyone who is interested:
http://www.telerik.com/community/forums/aspnet-ajax/grid/master-detail-hierarchy-binding-via-objectdatasource.aspx 

Greetings,
Tsvetina
the Telerik team