hierarchicaldatatemplate

TreeView, HierarchicalDataTemplate and recursive Data

You should only have to declare the HierarchicalDataTemplate for NodeViewModel as this is the only thing showing in the TreeView, and bind the actual ItemSource to the TreeView <TreeView ItemsSource=”{Binding Items}”> <TreeView.Resources> <HierarchicalDataTemplate DataType=”{x:Type local:NodeViewModel}” ItemsSource=”{Binding Children}”> <TextBlock Text=”{Binding Name}”></TextBlock> </HierarchicalDataTemplate> </TreeView.Resources> </TreeView> Full Example Xaml: <Window x:Class=”WpfApplication13.MainWindow” xmlns=”http://schemas.microsoft.com/winfx/2006/xaml/presentation” xmlns:x=”http://schemas.microsoft.com/winfx/2006/xaml” xmlns:local=”clr-namespace:WpfApplication13″ Title=”MainWindow” x:Name=”UI” Width=”343″ Height=”744.625″ … Read more

How to get TreeViewItem from HierarchicalDataTemplate item?

TreeViewItem item = (TreeViewItem)(mainTreeList .ItemContainerGenerator .ContainerFromIndex(mainTreeList.Items.CurrentPosition)); DOES NOT WORK (for me) as mainTreeList.Items.CurrentPosition in a treeview using a HierarchicalDataTemplate will always be -1. NEITHER DOES below as as mainTreeList.Items.CurrentItem in a treeview using a HierarchicalDataTemplate will always be null. TreeViewItem item = (TreeViewItem)mainTreeList .ItemContainerGenerator .ContainerFromItem(mainTreeList.Items.CurrentItem); INSTEAD I had to set a the last selected TreeViewItem … Read more

WPF Treeview Databinding Hierarchal Data with mixed types

Since you want the elements in the TreeView to have a list of children that consists of both Categories Products, you will want your Category ViewModel to have a collection that consists of both Categories and Products. For example, you could use a CompositeCollection to combine your existing collections: public class Category { public string … Read more