WPF Tree List - Use the Hierarchical Data Template to Build a Tree

This example demonstrates how to use the HierarchicalDataTemplate to apply a custom appearance to hierarchical data.

1. If all objects have the same field that contains child nodes, create a hierarchical data template and assign it to the TreeListView.DataRowTemplate property. You can also put hierarchical data templates into resources.

2. Specify the data type to which the template should be applied:

   <Window.Resources>
       <HierarchicalDataTemplate DataType="{x:Type local:ProjectObject}" ItemsSource="{Binding Stages}"/>
       <HierarchicalDataTemplate DataType="{x:Type local:ProjectStage}" ItemsSource="{Binding Tasks}"/>
   </Window.Resources>

3. Set the TreeListView.TreeDerivationMode property to HierarchicalDataTemplate.

Files to Review

• MainWindow.xaml (VB: MainWindow.xaml)
• ViewModel.cs (VB: ViewModel.vb)

Documentation

• Hierarchical Data Templates
• System.Windows.HierarchicalDataTemplate

More Examples

• WPF Tree List - Use the Child Nodes Selector to Display Hierarchical Data
• WPF Tree List - Implement the Child Nodes Path
• WPF Tree List - Bind to Self-Referential Data Structure

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