WPF-控件-DataTemplate生成的控件

<Window x:Class="由DataTemplate生成的控件.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:由DataTemplate生成的控件"
Title="MainWindow" Height="350" Width="525">
<Window.Resources>
<!--数据对象-->
<local:Student x:Key="stu" Id="1" Name="张三" Skill="C#" HasJob="True"/>
<!--DataTemplate-->
<DataTemplate x:Key="stuDT">
<Border BorderBrush="Orange" BorderThickness="2" CornerRadius="5">
<StackPanel>
<TextBlock Text="{Binding Id}" Margin="5"/>
<TextBlock x:Name="textBlockName" Text="{Binding Name}" Margin="5"/>
<TextBlock Text="{Binding Skill}" Margin="5"/>
</StackPanel>
</Border>
</DataTemplate>
</Window.Resources>
<StackPanel>
<ContentPresenter x:Name="cp" Content="{StaticResource stu}" ContentTemplate="{StaticResource stuDT}" Margin="5"/>
<Button Content="Find" Margin="5,0" Click="ButtonBase_OnClick"></Button>
</StackPanel>
</Window>

private void ButtonBase_OnClick(object sender, RoutedEventArgs e)
{
TextBlock tb = this.cp.ContentTemplate.FindName("textBlockName", this.cp) as TextBlock;
MessageBox.Show(tb.Text);
}

class Student
{
public int Id { get; set; }
public string Name { get; set; }
public string Skill { get; set; }
public bool HasJob { get; set; }
}