如何在使用LINQ to XML生成动态sitemap.xml时正确生成xsi:schemalocation属性？

Question

我正在生成一个动态的sitemap.xml

根据sitemaps.org,这是sitemap.xml的标头

<?xml version='1.0' encoding='UTF-8'?>
<urlset xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://www.sitemaps.org/schemas/sitemap/0.9 http://www.sitemaps.org/schemas/sitemap/0.9/sitemap.xsd"
     xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
    <url>
    ...
    </url>
</urlset>

所以我使用LINQ To XML生成sitemap.xml

XNamespace ns = "http://www.sitemaps.org/schemas/sitemap/0.9";
return new XElement(ns + "urlset",
    new XAttribute("xmlns", "http://www.sitemaps.org/schemas/sitemap/0.9"),
    new XAttribute(XNamespace.Xmlns + "xsi", "http://www.w3.org/2001/XMLSchema-instance"),
    //new XAttribute("xsi:schemaLocation", "http://www.sitemaps.org/schemas/sitemap/0.9 http://www.sitemaps.org/schemas/sitemap/0.9/sitemap.xsd"),
    from node in new GetNodes()
    select new XElement(ns + "url",
        new XElement(ns + "loc", node.Loc),
        new XElement(ns + "lastmod", node.LastMod),
        new XElement(ns + "priority", node.Priority)
    )
).ToString();

注释行是我无法正确的.
如何设置"xsi:schemalocation"属性？

谢谢.

Answer 1

好吧，我猜对了。感谢 Mike Caron
如果我声明 XAtrribute(XNamespace.Xmlns + "xsi",...) 那么它就可以工作

XNamespace ns = "http://www.sitemaps.org/schemas/sitemap/0.9"; 
XNamespace xsi = "http://www.w3.org/2001/XMLSchema-instance"; 
return new XElement(ns + "urlset",  
    new XAttribute("xmlns", "http://www.sitemaps.org/schemas/sitemap/0.9"),
    new XAttribute(XNamespace.Xmlns + "xsi", "http://www.w3.org/2001/XMLSchema-instance"),
    new XAttribute(xsi + "schemaLocation", "http://www.sitemaps.org/schemas/sitemap/0.9 http://www.sitemaps.org/schemas/sitemap/0.9/sitemap.xsd"),
    from node in GetNodes() 
    select new XElement(ns + "url", 
        new XElement(ns + "loc", node.Loc), 
        new XElement(ns + "lastmod", node.LastMod), 
        new XElement(ns + "priority", node.Priority) 
    ) 
).ToString();