From the code provided it is not clear which event handler the node gets added to the DropDownTree in and also we don't know how the control is configured. I attached a sample runnable page, in which a node is added to the DropDownTree in the Page_Load event handler and it is correctly displayed as checked. Please modify the page so that it demonstrates the issue and post your modifications for further review.
Regards,
Ivan Danchev
Telerik by Progress
Check out the new UI for ASP.NET Core, the most complete UI suite for ASP.NET Core development on the market, with 60+ tried-and-tested widgets, based on Kendo UI.
the code was in the itemcreated event of the radgrid... I am trying to assigned the saved data to the dropdowntree when the users is editing the record .
I replied in the support ticket with the same subject you opened. If you have further questions I suggest we continue the discussion in it in order to avoid thread duplication. Any information from it that could be interesting or helpful to the community we can subsequently post in this thread as well.
Regards,
Ivan Danchev
Telerik by Progress
Check out the new UI for ASP.NET Core, the most complete UI suite for ASP.NET Core development on the market, with 60+ tried-and-tested widgets, based on Kendo UI.