RadTreeView DataSource Changed ,but the ui has not changed .

[sun]

how to refresh the radtreeview ui while the datasource of the radtreeview changed .for example add or update one record

[Dess | Tech Support Engineer, Principal]

Hello, Sun,

Please have a look at the following help article which demonstrates how to notify the RadTreeView control for any changes and keep the state:

https://docs.telerik.com/devtools/winforms/controls/treeview/how-to/keep-radtreeview-states-on-reset 

I hope this information helps. If you need any further assistance please don't hesitate to contact me. 

Regards,
Dess | Tech Support Engineer, Principal
Progress Telerik

[sun]

i don't want to implement INotifyPropertyChanged interface, is there another approach ?

someone tell me to use bindingsource object ,when the datamodel changed ,just call the resetbinding method ,but it still couldn't work here

[Dess | Tech Support Engineer, Principal]

Indeed, it is also a suitable approach. The following tutorial demonstrates how to notify the control that your data source has changed by calling the ResetBindings method.

https://learn.microsoft.com/en-us/dotnet/desktop/winforms/controls/reflect-data-source-updates-in-a-wf-control-with-the-bindingsource?view=netframeworkdesktop-4.8