Radtreeview template example

The method can be called before, as well as after the node is added to the node collection of the control. Client templates can be applied globally for all RadTreeView nodes or per Node basis allowing a diversity in the look and feel of the different nodes.

This functionality is very useful in case of hierarchy when the root nodes doesn't have templates, by their children does. There are two new methods of the RadTreeView client-side object which are also available for its nodes:. As a parameter should be passed a string representing the template including the binding expressions. All Rights Reserved.

See Trademarks for appropriate markings. EventArgs Handles Me. Load If Not Page. RadTreeNode ; node. In this article. Not finding the help you need? Download free day trial. There should be virtually no differences between the usage of HierarchicalDataTemplate in RadTreeView and other controls. The following example demonstrates how to create a hierarchical data source and bind a RadTreeView to it, using a HierarchicalDataTemplate.

The ItemsSource property of the HierarchicalDataTemplate specifies the binding that has to be applied to the ItemsSource property of each item. The DataTemplate property specifies the template that has to be applied on each item, while the ItemTemplate is the template applied on its child items. You can nest several HierarchicalDataTemplate declarations if you need a deeper level of hierarchy. If you have a databound control , then you must consider the following rules.

The ItemsControl prepares its children in a very different way, depending on the type of the child :. In the case of the RadTreeView , the tree items are HeaderedItemsControl , which means that the above properties will be passed along to all the items, and there is no need to set the ItemTemplate property of the HierarchicalDataTemplate , especially if there is a selector.

The ItemContainerStyle will be set as a style for the containers, if there is none and an ItemContainerStyleSelector is present, a style will be selected. The above rules can "mix" with the properties set in the HierarchicalDataTemplate to create even more combinations of ways to set the templates of items.

The HeaderTemplate displayed for an item can be a result of one of the following:. An interesting point here is the precedence over what should be set.

As always, local values are stronger than styles. The rule is that the ItemContainerStyle from the HierarchicalDataTemplate is applied to the first level of containers that has a style which is the same as the parent's.