C1TreeViewItems can be added to the C1TreeView control as static items defined either in the XAML markup or in the code behind or can be defined on your page or user control by using any of the following methods:

• Static creation using XAML syntax or programmatically through the code behind file
• Dynamic creation using a constructor to create new instances of the C1TreeViewItem class.
• Data source creation through binding C1TreeView to a SiteMapDataSource, XMLDataSource, or an AccessDataSource.