LINQ查询字符串判断是否大写

    #region Linq to 字符串char.IsUpper意思是判断是否大写
            //string strDemo = "HelloWord!";
            //var query = from n in strDemo
            //            where char.IsUpper(n)
            //            select n;
            //foreach (char c in query)
            //{
            //    Console.WriteLine(c);
            //}

            #endregion