如何按值而不是引用将数组添加到列表中？

Question

Is there a way to add an array to a list of arrays by value and not by reference?

Example: The following prints out "6, 7, 8, 9, 10". I want it to write out "1, 2, 3, 4, 5".

int[] testArray = new int[5] { 1, 2, 3, 4, 5 };
List<int[]> testList = new List<int[]>();

testList.Add(testArray);

testArray[0] = 6;
testArray[1] = 7;
testArray[2] = 8;
testArray[3] = 9;
testArray[4] = 10;

foreach(int[] array in testList)
{
    Console.WriteLine("{0}, {1}, {2}, {3}, {4}", array[0], array[1], array[2], array[3], array[4]);
}

Answer 1

制作一个副本：

testList.Add(testArray.ToArray());

Answer 2

您必须Clone()数组，即创建数组的浅拷贝并将其添加到列表中。

testList.Add((int[])testArray.Clone());

Answer 3

Instead of

testList.Add(testArray);

use

testList.Add(testArray.Clone() as int[]);