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TreeView, how to set an event handler when using hierarchichalDataTemplate

Posted By:      Posted Date: October 07, 2010    Points: 0   Category :WPF
I've defined a databound treeview like this: 
<TreeView Margin="10" Name="tvProtocolos" HorizontalAlignment="Left" VerticalAlignment="Top" Width="Auto" Height="430" MinWidth="230">
            <HierarchicalDataTemplate ItemsSource="{Binding Path=Children}">
                 <TextBlock Text="{Binding Path=Name}" ></TextBlock>        
But I can't find a way to define the Event handler function for the Select property, so that this function is run every time one selects an element in the tree.

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