wpf 获得所有控件的控件模板

using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Markup;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Xml;

namespace GetControlTemplate
{
    /// 

    /// MainWindow.xaml 的交互逻辑
    /// 
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            Type controlType = typeof(Control);
            List derivedTypes = new List();
            Assembly assembly = Assembly.GetAssembly(typeof(Control));
            foreach (Type type in assembly.GetTypes())
            {
                if (type.IsSubclassOf(controlType) && !type.IsAbstract && type.IsPublic)
                {
                    derivedTypes.Add(type);
                }
            }
            derivedTypes = derivedTypes.OrderBy(s => s.Name).ToList();
            lstTypes.ItemsSource = derivedTypes;
        }

        private void LstTypes_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            try
            {
                Type type = (Type)lstTypes.SelectedItem;
                ConstructorInfo info = type.GetConstructor(System.Type.EmptyTypes);
                Control control = (Control)info.Invoke(null);
                control.Visibility = Visibility.Collapsed;
                grid.Children.Add(control);
                ControlTemplate template = control.Template;
                XmlWriterSettings settings = new XmlWriterSettings();
                settings.Indent = true;
                StringBuilder sb = new StringBuilder();
                XmlWriter writer = XmlWriter.Create(sb, settings);
                XamlWriter.Save(template, writer);

                txtTemplate.Text = sb.ToString();
                grid.Children.Remove(control);
            }
            catch (Exception ex)
            {
                txtTemplate.Text = "Error generation template:" + ex.Message;
            }
        }
    }
}