WinRT Binding data of ViewMode inside a DataTemplate - xaml

Question

I wanted to bind data inside a DataTemplate that is stored in ViewModel. I've tried several ways but did not succeed and the solutions for WPF doesn't seems to work on WinRT like AncestorType Property of RelativeSource.
<Page.DataContext>
<local:ViewModel x:Name="ViewModel" />
</Page.DataContext>
<StackPanel Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
<ListView ItemsSource="{x:Bind ViewModel.names}">
<ListView.ItemTemplate>
<DataTemplate x:DataType="local:mydatatype">
<StackPanel>
<TextBlock Text="{Binding Name}"/>
<!--Here I want a TextBlock to show the number-->
</StackPanel>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
</StackPanel>
Here is the ViewModel
public class ViewModel
{
public int Number = 42;
public List<mydatatype> names = new List<mydatatype>();
public ViewModel()
{
names.Add(new mydatatype("name1"));
names.Add(new mydatatype("name2"));
}
}
public class mydatatype
{
public string Name { get; set; }
public mydatatype(string name)
{
this.Name = name;
}
}

Answer 1

You can access the DataTemplate of other objects by giving them a name and then referencing this. Using this technique you should be able to access its DataContext to bind to the viewmodel directly, even from within a DataTemplate
<Page x:Name="PageRoot">
<Page.DataContext>
<local:ViewModel x:Name="ViewModel" />
</Page.DataContext>
<StackPanel Background="{ThemeResource ApplicationPageBackgroundThemeBrush}" x:Name="MainPanel">
<ListView ItemsSource="{x:Bind ViewModel.names}">
<ListView.ItemTemplate>
<DataTemplate x:DataType="local:mydatatype">
<StackPanel>
<TextBlock Text="{Binding Name}"/>
<TextBlock Text="{Binding DataContext.Name, ElementName=PageRoot}"/>
</StackPanel>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
</StackPanel>
</Page>