6 Answers, 1 is accepted
On our Feedback Portal there is a thread for a Feature Request regarding this functionality. You can Follow the status updates for its implementation from this URL: https://feedback.telerik.com/blazor/1427582-select-and-multiple-select-of-items. I have given a Vote on your behalf already.
Also, there you can find a workaround solution for the time-being.
Thanks to all who responded to my query. Based on what I have learned I thought I would share my version. It has a feature that acts as a selected node so that when you click on a node it stays selected until you click on another node. Hope someone finds it useful. It's not perfect, but seems to do the job.
Minor bug fix