WPF ContentControl not displaying anything - wpf

Question

I am trying to build a Control that selectively displays different things based upon the types that are passed in, but for some reason I end up displaying nothing at all.
Is there some fundamental thing that I am missing here? (This code is massively stripped down from my real production app bu exhibits the same behavior)
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
DataContext = new List<ContactInformation>
{
new Address {Street = "21 Jump", City = "Sparta", State = "Denial"},
new Phone {Number = "734-555-1212"}
};
}
}
public class ContactInformation
{
}
public class Address : ContactInformation
{
public string Street { get; set; }
public string City { get; set; }
public string State { get; set; }
}
public class Phone : ContactInformation
{
public string Number { get; set; }
}
<Window x:Class="ContentControlExample.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:contentControlExample="clr-namespace:ContentControlExample"
Title="MainWindow" Height="350" Width="525">
<Grid>
<ItemsControl ItemsSource="{Binding /}">
<ItemsControl.ItemTemplate>
<DataTemplate>
<ContentControl DataContext="{Binding /}" Content="{Binding /}">
<ContentControl.Resources>
<DataTemplate DataType="{x:Type contentControlExample:Address}">
<StackPanel>
<TextBlock Text="{Binding Street}"/>
<TextBlock>
<TextBlock.Text>
<MultiBinding StringFormat="{}{0}, {1}">
<Binding Path="City"/>
<Binding Path="State"/>
</MultiBinding>
</TextBlock.Text>
</TextBlock>
</StackPanel>
</DataTemplate>
<DataTemplate DataType="{x:Type contentControlExample:Phone}">
<TextBlock Text="{Binding Number}"/>
</DataTemplate>
</ContentControl.Resources>
</ContentControl>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
</Grid>
</Window>

Answer 1

All you need is to remove a couple of '/' as follow:
XAML:
<Window x:Class="ContentControlExample.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:contentControlExample="clr-namespace:ContentControlExample"
Title="MainWindow" Height="350" Width="525">
<Grid>
<ItemsControl ItemsSource="{Binding }">
<ItemsControl.ItemTemplate>
<DataTemplate>
<ContentControl DataContext="{Binding }" Content="{Binding }">
<ContentControl.Resources>
<DataTemplate DataType="{x:Type contentControlExample:Address}">
<StackPanel>
<TextBlock Text="{Binding Street}"/>
<TextBlock>
<TextBlock.Text>
<MultiBinding StringFormat="{}{0}, {1}">
<Binding Path="City"/>
<Binding Path="State"/>
</MultiBinding>
</TextBlock.Text>
</TextBlock>
</StackPanel>
</DataTemplate>
<DataTemplate DataType="{x:Type contentControlExample:Phone}">
<TextBlock Text="{Binding Number}"/>
</DataTemplate>
</ContentControl.Resources>
</ContentControl>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
</Grid>
</Window>
The Code behind:
namespace ContentControlExample
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
DataContext = new List<ContactInformation>
{
new Address {Street = "21 Jump", City = "Sparta", State = "Denial"},
new Phone {Number = "734-555-1212"}
};
}
}
public class ContactInformation
{
}
public class Address : ContactInformation
{
public string Street { get; set; }
public string City { get; set; }
public string State { get; set; }
}
public class Phone : ContactInformation
{
public string Number { get; set; }
}
}
The Ouput:
I hope this helps.

Answer 2

Try changing your code slightly. This works because the ItemsControl automatically picks the correct DataTemplate based on the type of the item being bound to.
public class ViewModel
{
public ViewModel()
{
this.Items = new List<ContactInformation>
{
new Address
{
Street = "21 Jump",
City = "Sparta",
State = "Denial"
},
new Phone { Number = "734-555-1212" }
};
}
public List<ContactInformation> Items { get; set; }
}
<Window.DataContext>
<contentControlExample:ViewModel/>
</Window.DataContext>
<Grid>
<Grid.Resources>
<DataTemplate DataType="{x:Type contentControlExample:Address}">
<StackPanel>
<TextBlock Text="{Binding Street}"/>
<TextBlock>
<TextBlock.Text>
<MultiBinding StringFormat="{}{0}, {1}">
<Binding Path="City"/>
<Binding Path="State"/>
</MultiBinding>
</TextBlock.Text>
</TextBlock>
</StackPanel>
</DataTemplate>
<DataTemplate DataType="{x:Type contentControlExample:Phone}">
<TextBlock Text="{Binding Number}"/>
</DataTemplate>
</Grid.Resources>
<ItemsControl ItemsSource="{Binding Items}"/>
</Grid>
Or to bind the current item to a content control:
<Grid>
... resources
<ContentControl Content="{Binding Items/}"/>
</Grid>