"Programming WPF" Translation 4th Chapter 3. Bind to Data list

So far, you've seen some examples of binding controls to a single object. However, the more complex use is bound to a list of objects. For example, imagine that our object data source can create a new type that represents a list of person objects, just as example 4-19:

Example 4-19

using System.Collections.Generic; // List<T>

namespace PersonBinding {
　 // XAML doesn't (yet) have a syntax
　 // for generic class instantiation
　 class People : List<Person> {}
}

We can hang up this new list of data sources and bind to it in the same way as if it were bound to a separate object data source, like example 4-20.

Example 4-20

<!-- Window1.xaml -->
<?Mapping XmlNamespace="local" ClrNamespace="PersonBinding" ? >
<Window　 xmlns:local="local">
　 <Window.Resources>
　　　 <local:People x:Key="Family">
　　　　　 <local:Person Name="Tom" Age="9" />
　　　　　 <local:Person Name="John" Age="11" />
　　　　　 <local:Person Name="Melissa" Age="36" />
　　　 </local:People>
　　　 <local:AgeToForegroundConverter
　　　　　 x:Key="AgeToForegroundConverter" />
　 </Window.Resources>
　 <Grid DataContext="{StaticResource Family}">

　　　 <TextBlock >Name:</TextBlock>
　　　 <TextBox Text="{Binding Path=Name}"　 />
　　　 <TextBox
　　　　　 Text="{Binding Path=Age}"
　　　　　 Foreground="{Binding Path=Age, Converter=}"　 />
　　　 <Button >Birthday</Button>
　 </Grid>
</Window>

In Example 4-20, we created an example of a people collection and imported it through three person objects. However, running it will be as shown in Figure 4-6.