c# – 使用StringBuilder编写XML好吗？

感觉很脏但也许不是…使用StringBuilder编写 XML可以吗？我的直觉本能就是说“虽然这种感觉很错,但是由于没有加载额外的库和开销,因此它不会执行任何额外的XmlWriter调用方法.它似乎一般只是代码少一些. XmlWriter有什么好处？

这是它的样子.我正在根据您所在的域构建OpenSearch XML文档.

public void ProcessRequest(HttpContext context)
{
    context.Response.ContentType = "text/xml";

    string domain = WebUtils.ReturnParsedSourceUrl(null); //returns something like www.sample.com
    string cachedChan = context.Cache[domain + "_opensearchdescription"] as String;

    if (cachedChan == null)
    {
        StringBuilder sb = new StringBuilder();
        sb.Append("<?xml version="1.0" encoding="UTF-8"?>");
        sb.Append("<OpenSearchDescription xmlns="http://a9.com/-/spec/opensearch/1.1/" xmlns:moz="http://www.mozilla.org/2006/browser/search/">");
        sb.Append("    <ShortName>Search</ShortName>");
        sb.Append("    <Description>Use " + domain + " to search.</Description>");
        sb.Append("    <Contact>contact@sample.com</Contact>");
        sb.Append("    <Url type="text/html" method="get" template="http://" + domain + "/Search.aspx?q={searchTerms}" />");
        sb.Append("    <moz:SearchForm>http://" + domain + "/Search.aspx</moz:SearchForm>");
        sb.Append("    <Image height="16" width="16" type="image/x-icon">http://" + domain + "/favicon.ico</Image>");
        sb.Append("</OpenSearchDescription>");

        cachedChan = sb.ToString();

        context.Cache.Insert(domain + "_opensearchdescription",cachedChan,null,DateTime.Now.AddDays(14),TimeSpan.Zero);
    }

    context.Response.Write(cachedChan);
}

跟随,?2年后
我意识到我的意思是说,完全没有说出来：使用XML类生成这个文件的代码的好处是什么,而不是使用字符串？有没有这比(例如)约翰·桑德的例子更糟吗？

我使用吉姆舒伯特的方法,选择“我可以读这个,这是有道理的”,而不是争取“正确性”.我很高兴我做到了约翰·桑德的例子没有什么不对,但是我觉得这对于我想要完成的事情来说太过分了.实用主义？也许.

public static string MakeXml()
{
    XNamespace xmlns = "http://a9.com/-/spec/opensearch/1.1/";
    XNamespace moz = "http://www.mozilla.org/2006/browser/search/";
    string domain = "http://localhost";
    string searchTerms = "abc";
    var doc = new XDocument(
        new XDeclaration("1.0","UTF-8","yes"),new XElement(
            xmlns + "OpenSearchDescription",new XElement(xmlns + "ShortName","Search"),new XElement(
                xmlns + "Description",String.Format("Use {0} to search.",domain)),new XElement(xmlns + "Contact","contact@sample.com"),new XElement(
                xmlns + "Url",new XAttribute("type","text/html"),new XAttribute("method","get"),new XAttribute(
                    "template",String.Format(
                        "http://{0}/Search.aspx?q={1}",domain,searchTerms))),new XElement(
                moz + "SearchForm",String.Format("http://{0}/Search.aspx",new XElement(
                xmlns + "Image",new XAttribute("height",16),new XAttribute("width","image/x-icon"),String.Format("http://{0}/favicon.ico",domain))));
    return doc.ToString(); // If you _must_ have a string
}