I have been trying to find some resources for using custom objects as data for WPF TreeView for my own little project.
I most useful/closest to what I wanted to do was by Mike Hillberg but still its a bit complex for my needs. I just needed something simple. What I had was a Dir objects that has a List of Directories inside, which i wanted to display in the TreeView
public class Dir
{
public Dir(){}
public List<Dir> Directories{get;set;}
....
}
The code for the Dir class.
What you need now is a template or more specifically a HierarchicalDataTemplate that tells the TreeView how to read your object.
<Window x:Class="TaggerGui.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:TaggerGui"
Title="Window1" Height="600" Width="600">
.......
<TreeView Grid.Column="0" Name="FileTree" ItemsSource="{x:Static local:Window1.dirs}">
<TreeView.ItemTemplate>
<HierarchicalDataTemplate ItemsSource="{Binding Path=Directories}">
<StackPanel Orientation="Horizontal">
<TextBlock Text="{Binding Path=Name}"/>
</StackPanel>
</HierarchicalDataTemplate>
</TreeView.ItemTemplate>
</TreeView>
.....
</Window>
In this case I declare a static public ObservableCollection<File> dirs=new ObservableCollection<File>(); in the cs file and bind that using the x:static binding. Remember that you have to add the reference to the namespace that you are using at the top of the xaml file, (the xmlns:local=”clr-namespace:TaggerGui”) part
Okies now for the next problem, let say i want to display different colors in the tree depending on how the presence of a certain file in the directory. How would you do that ? Well I am looking at the MVVM or the Model View View Model Pattern, that would be another blog post.
Links:
An Example of using Objects with Observable Collection in TreeView – Mike Hillberg
