Context ct = new Context(cnn);
var editorsLastArticles
= from article in ct.GetTable()
group article by article.M_RefKoseYazariId
into g
let lastArticleDate = g.Max(x => x.M_KayitTarihi)
select new
{
Editor = g.Key,
LastArticleDate = lastArticleDate
};
Başka bir kaynakta: http://www.zirvedekibeyinler.net/Makaleler-237-linq-to-sql--group-by.aspx