public ContentResult BlogGroups()
{
StringBuilder sb = new StringBuilder();
sb.Append("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
sb.Append("<urlset xmlns=\"http://www.sitemaps.org/schemas/sitemap/0.9\">");
foreach (var item in Groups.GetByGroupType(GroupType.Blogs))
{
var lastestDate = Articles.LatestDateByGroupID(item.ID);
sb.Append(" <url>");
sb.Append(" <loc>" + StaticValues.WebsiteUrl + UrlProvider.GetBlogGroupUrl(item.TitleEn) + "</loc>");
sb.Append(" <lastmod>" + lastestDate.ToString("yyyy-MM-dd") + "</lastmod>");
sb.Append(" </url> ");
}
sb.Append("</urlset>");
return(Content(sb.ToString(), "text/xml"));
}
