So obviously I am doing something wrong, but I just cannot seem to get the HierarchicalDataTemplate (or even just DataTemplate) to work when using the DataType property. I have created the shortest possible WPF application to demonstrate the problem.
XAML:
<Window x:Class="WpfApplication1.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:System="clr-namespace:System;assembly=mscorlib"
xmlns:local="clr-namespace:WpfApplication1"
Title="Window1" Height="300" Width="300" Loaded="Window_Loaded">
<Window.Resources>
<HierarchicalDataTemplate DataType="x:Type local:Foo">
<TextBlock Text="I am a Foo" />
</HierarchicalDataTemplate>
<HierarchicalDataTemplate DataType="x:Type System:String">
<TextBlock Text="I am a String" />
</HierarchicalDataTemplate>
</Window.Resources>
<Grid>
<TreeView Name="treeView1" ItemsSource="{Binding}" />
</Grid>
</Window>
CODE:
namespace WpfApplication1
{
public class Foo
{
public string Name { get; set; }
}
public partial class Window1 : Window
{
public Window1()
{
InitializeComponent();
}
private void Window_Loaded(object sender, RoutedEventArgs e)
{
var list = new List<object> { "a", 1, "b", 2, new Foo() { Name="Brian"}};
treeView1.DataContext = list;
}
}
}
Obviously I am expecting it display the following in the treeview.
I am a string
1
I am a string
2
I am a foo
But my application actually displays the following.
a
1
b
2
WpfApplication1.Foo
The strange thing is that almost every example I see on the web does this very thing (with slight variations) and no one else seems to be having a problem with it. Yet I have tried countless different ways of rearranging the XAML and nothing seems to help. I am hoping another pair eyes can help.
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