How to refine the DataContext locally for a Grid? - wpf

Question

I can't find the way to move the reference to property P1 at Grid level.
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<TextBox Grid.Row="0" Text="{Binding P1.Name}"/>
<TextBox Grid.Row="1" Text="{Binding P1.Age}"/>
</Grid>
P1 is a property of the View-Model instance set as DataContext for the Window. It references a Person instance with Name and Age properties. Is there a possibility to "refine" this DataContext for the Grid, so that cells can be bound like:
<Grid DataContext="P1">
<TextBox Grid.Row="0" Text="{Binding Name}"/>
<TextBox Grid.Row="1" Text="{Binding Age}"/>
</Grid>
I'm trying to do this so that different Grid can be bound to different Person (P1, P2, ...).

Answer 1

As kindly suggested by #ASh, the correct syntax is to use a Binding object to set the DataContext. If two Person instances P1 and P2 where to be shown side-by-side, this code would work:
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition/>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<!-- Binding first grid DataContext to P1 -->
<Grid Grid.Column="0" DataContext="{Binding P1}">
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<TextBox Grid.Row="0" Text="{Binding Name}"/>
<TextBox Grid.Row="1" Text="{Binding Age}"/>
</Grid>
<!-- Binding second grid DataContext to P2 -->
<Grid Grid.Column="1" DataContext="{Binding P2}">
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<TextBox Grid.Row="0" Text="{Binding Name}"/>
<TextBox Grid.Row="1" Text="{Binding Age}"/>
</Grid>
</Grid>