The Telerik ItemsControl is an extension of the MS ItemsControl and adds the following:
- ItemTemplateSelector (which I needed in the example)
- ContainerBindings, which work similarly to the StyleBindigns in WPF
The TelerikControl also "understands" HeaderedContentControls and HeaderedItemsControls when they are its containers and treats them a bit differently (as in WPF). This items control also works with HierarchicalDataTemplates and is very flexible, as outlined here:
As for your question "How can I drag more than one but at once"
If I understand you correctly, you are trying to start dragging more than one item at once. Since you can put anything in the Payload of a DragDrop, you can put a collection of items there instead of a single item - for example these can be the SelectedItems
of a control rather than its SelectedItem.
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