如何在C#中将此XAML Content控件转换为Code XAML？

using System.Xaml;
using System.IO;

// XAML Content控件的XAML内容
string xamlContent = "<ContentControl xmlns=\"http://schemas.microsoft.com/winfx/2006/xaml/presentation\">" +
                     "<TextBlock Text=\"Hello, World!\"/></ContentControl>";

// 创建一个XamlObjectWriter对象
XamlObjectWriter xamlWriter = new XamlObjectWriter(new XamlSchemaContext());

// 创建一个XamlObjectWriter的构建器
XamlObjectWriterSettings settings = new XamlObjectWriterSettings();
settings.ExternalNameScope = new NameScope();
XamlObjectWriterBuilder builder = new XamlObjectWriterBuilder(xamlWriter, settings);

// 将XAML内容转换为Code XAML，并写入到XamlObjectWriter中
XamlServices.Transform(new StringReader(xamlContent), builder);

// 获取转换后的Code XAML
string codeXaml = xamlWriter.Result.ToString();