C#动态调整数组大小的方法

namespace ArrayManipulation{ Class Program {  static void Main (String[] args)  {   int[] arr = new int[]{1,2,3};   PrintArr(arr);    arr = (int[])Redim(arr,5);   PrintArr (arr);    arr = (int[]) Redim (arr, 2);   PrintArr (arr);  )  public static Array Redim (Array origArray, int desiredSize)  {   //determine the type of element   Type t = origArray.GetType().GetElementType();    //create a number of elements with a new array of expectations   //new array type must match the type of the original array   Array newArray = Array.CreateInstance (t, desiredSize);    //copy the original elements of the array to the new array   Array.Copy (origArray, 0, newArray, 0, Math.Min (origArray.Length, desiredSize));    //return new array   return newArray;  }   //print array  public static void PrintArr (int[] arr)  {   foreach (int x in arr)   {    Console.Write (x + ",");   }   Console.WriteLine ();  } }}