如何获取后端htmlcontrol对象的html

这是我过去用来提前获取控件呈现的HTML的方法(确保包括 System.IO ):

protected string ControlToHtml(Control c)
{
    StringWriter sw = new StringWriter();
    HtmlTextWriter htmlWriter = new HtmlTextWriter(sw);
    c.RenderControl(htmlWriter);
    return sw.ToString();
}

为测试用例返回:

<h3 class="accordion"><a href="#">Foo Bar</a></h3>

下面是一个示例,您可以使用它来扩展任何htmlcontrol以具有render()方法:

public static string Render(this HtmlAnchor TheAnchor)
{
    StringWriter sw = new StringWriter();
    HtmlTextWriter htmlWriter = new HtmlTextWriter(sw);
    TheAnchor.RenderControl(htmlWriter);
    return sw.ToString(); 
}

难道不应该有一个渲染方法强制它发出自己的HTML吗?