C#数组

  1 using System;
  2 using System.Collections.Generic;
  3 using System.Linq;
  4 using System.Text;
  5 using System.Threading.Tasks;
  6 
  7 namespace ArrayDemo
  8 {
  9     class Program
 10     {
 11 
 12         static void Main(string[] args)
 13         {
 14             //1
 15             int[] myArray;
 16             myArray = new int[4];
 17 
 18             //2
 19             int[] myArray2 = new int[4];
 20 
 21             //3
 22             int[] myArray3 = new int[4] { 1, 2, 3, 4 };
 23 
 24             //4
 25             int[] myArray4 = new int[] { 1, 2, 3, 4 };
 26 
 27             //5
 28             int[] myArray5 = { 1, 2, 3, 4 };
 29 
 30 
 31             //6
 32             var myArray6 = new int[] { 1, 2, 3, 4 };
 33 
 34             int[] myArray7;
 35             myArray7 = new int[] { 1, 3, 4 };
 36             int n = myArray7.Rank;//维度
 37 
 38 
 39             Array intArray = Array.CreateInstance(typeof(int), 5);
 40             for (int i = 0; i < intArray.Length; i++)
 41             {
 42                 intArray.SetValue(33, i);
 43             }
 44 
 45             for (int i = 0; i < 5; i++)
 46             {
 47                 Console.WriteLine(intArray.GetValue(i));
 48             }
 49 
 50             //CreateInstance()方法有许多重载版本，可以创建多维数组和不基于0的数组
 51             //下面的例子就创建一个包含2X3个元素的二维数组，第一维基于1，第二维基于10
 52             int[] lengths = { 2, 3 };
 53             int[] lowerBounds = { 1, 10 };
 54             Array racers = Array.CreateInstance(typeof(Person), lengths, lowerBounds);
 55             //SetValue()方法设置数组的元素，其参数是每一维的索引
 56             racers.SetValue(new Person
 57             {
 58                 FirstName = "Alain",
 59                 LastName = "Prost"
 60             }, index1: 1, index2: 10);
 61             racers.SetValue(new Person
 62             {
 63                 FirstName = "Emerson",
 64                 LastName = "Fittipaldi"
 65             }, 1, 11);
 66             racers.SetValue(new Person
 67             {
 68                 FirstName = "Emerson",
 69                 LastName = "Fittipaldi"
 70             }, 1, 12);
 71             racers.SetValue(new Person
 72             {
 73                 FirstName = "Emerson",
 74                 LastName = "Fittipaldi"
 75             }, 2, 10);
 76             racers.SetValue(new Person
 77             {
 78                 FirstName = "Emerson",
 79                 LastName = "Fittipaldi"
 80             }, 2, 11);
 81             racers.SetValue(new Person
 82             {
 83                 FirstName = "Emerson",
 84                 LastName = "Fittipaldi"
 85             }, 2, 12);
 86 
 87 
 88             Console.ReadKey();
 89         }
 90     }
 91 
 92     //
 93     public class Person
 94     {
 95         public string FirstName { get; set; }
 96         public string LastName { get; set; }
 97         public override string ToString()
 98         {
 99             return String.Format("{0} {1}", FirstName, LastName);
100         }
101     }
102 }