public virtual string GenerateXmlString(params SiteMapItem[] items)
{
if (items.Any() != true)
{
throw new ArgumentNullException($"{nameof(items)} is empty.");
}
var siteMapCount = (int)Math.Ceiling(items.Length / (double)SiteMapValidator.MaximumSiteMapIndexCount);
SiteMapValidator.CheckSiteMapCount(siteMapCount);
var siteMapXml =
new XDocument(
new XDeclaration("1.0", "utf-8", "yes"),
new XElement(Xmlns + "urlset",
new XAttribute("xmlns", Xmlns),
new XAttribute(XNamespace.Xmlns + "xsi", Xsi),
new XAttribute(Xsi + "schemaLocation",
@"http://www.sitemaps.org/schemas/sitemap/0.9 http://www.sitemaps.org/schemas/sitemap/0.9/sitemap.xsd"),
from item in items
select CreateItemElement(item)
)
);
var xml = siteMapXml.ToString(Encoding.UTF8);
SiteMapValidator.CheckDocumentSize(xml);
return(xml);
}
