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; }
    }