C#对数组概念进行了彻底的面向对象化，很大程度上降低了我们对数组结构的使用难度，并且它已经支持了.Net平台的垃圾收集机制。随着C#版本的不断更新，从数组中派生出的新数据结构也日益增加。按照28原理，我们只需要使用其中的20%就能解决80%的问题。但为了做到极致，我们还是需要了解下它们。本文总结到C#（4.0）为止的一些与数组相关的数据结构以及它们的用法。

基本数组

            string[] fruit = new string[5];
            string[] vegetable = new string[] { "chinese cabbage", "pepper", "potato", "tomato", "broccoli" };
            fruit[0] = "orange";
            fruit[1] = "banana";
            fruit[2] = "apple";
            fruit[3] = "grape";
            fruit[4] = "lychee";

多维数组

            string[,] monthplan=new string[30,7];
            monthplan[0,0]="A";
            monthplan[0, 1] = "B";

锯齿数组

            string[][] foodenum = new string[7][];
            foodenum[0] = new string[10];
            foodenum[1] = new string[9];
            foodenum[2] = new string[8];
            foodenum[3] = new string[7];
            foodenum[4] = new string[6];
            foodenum[5] = new string[5];
            foodenum[6] = new string[6];

IEnumerator接口

        public static IEnumerator<string> Yield()
        {
            yield return "apple";
            yield return "orange";
            yield return "banana";
        }

        public static void IEnumeratorTest()
        {
            var iterator=Yield();
            while (iterator.MoveNext())
            {
                Console.WriteLine(iterator.Current);
            }
            /*OUT PUT
             apple
             orange
             banana
             */
        }

数组片断

        public static void ArraySegment()
        {
            string[] vegetable = new string[] { "chinese cabbage", "pepper", "potato", "tomato", "broccoli" };
            // count: get data begin the current index.
            ArraySegment<string> arraySegment = new ArraySegment<string>(vegetable,2,2);
            for (int i = arraySegment.Offset; i <= arraySegment.Offset + arraySegment.Count; i++)
            {
                Console.WriteLine(arraySegment.Array[i]);
            }
            /*
             * OUT PUT
             * potato
               tomato
               broccoli
             */
        }

元组

        public static void Tuples()
        { 
            var tuple=Tuple.Create<string,string,string,string,int,int,int,Tuple<double,double>>("A"
                                                                                                 ,"B"
                                                                                                 ,"C"
                                                                                                 ,"D"
                                                                                                 ,1
                                                                                                 ,2
                                                                                                 ,3
                                                                                                 ,Tuple.Create<double,double>(11.1,22.2));
            Console.WriteLine(tuple.ToString());
            Console.WriteLine(tuple.Item1);
            Console.WriteLine(tuple.Item2);
            Console.WriteLine(tuple.Item3);
            Console.WriteLine(tuple.Item4);
            Console.WriteLine(tuple.Item5);
            Console.WriteLine(tuple.Item6);
            Conso