linq ToDictionary 与 ＦｏｒＥａｃｈ使用（转）

例：
 public class Menu
{

public string Id{ get; set; }
        public string Name { get; set; }
}

static Dictionary<string, string> test(IList<Menu> menus)
        {
            var dic = new Dictionary<string, string>();
            dic = menus.ToDictionary(k => k.Id, v => v.MenuName);
            return dic;
        }

 出处：http://blog.csdn.net/cyb331/article/details/16939927

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                {
                    if (listChecked.Any(c => c.ToolName == u.ToolName))
                    {
                        u.Obsolete = true;
                    }
                    else
                    {
                        u.Obsolete = false;
                    }
                });