Foreach循环输出索引值

 class Bh
    {
        public string[] str { get; set; }

        public void TestFor()
        {
            for (int i = 0; i < str.Length; i++)
            {
                Console.WriteLine("index:{0},Value:{1}", i, str[i]);
            }
        }
    }

class Bh
    {
        public string[] str { get; set; }

        public void TestFor()
        {
            for (int i = 0; i < str.Length; i++)
            {
                Console.WriteLine("index:{0},Value:{1}", i, str[i]);
            }
        }

        public void TestForeach()
        {
            int idx = 0;
            foreach (string s in str)
            {
                Console.WriteLine("index:{0},Value:{1}", idx, s);
                idx++;
            }
        }
    }