https://demos.telerik.com/aspnet-ajax/treeview/examples/functionality/draganddropnodes/defaultvb.aspx?show-source=true&skin=Simple
Telerik Web UI TreeView Drag-and-drop Demo | Telerik UI for ASP.NET AJAX
Telerik WebForms TreeView Drag-and-drop. Learn more about TreeView for ASP.NET AJAX and get a free trial today.
drag and drop demoweb ui