C# 中数组写入是原子的吗

C#中的数组写入是否原子操作？

csharp
using System;
using System.Threading;
class Program
{
    static int[] myArray = new int[5];
    static void Main()
    {
        Thread t1 = new Thread(WriteToMyArray);
        Thread t2 = new Thread(WriteToMyArray);
        t1.Start(1); // 向数组写入数字1
        t2.Start(2); // 向数组写入数字2
        t1.Join();
        t2.Join();
        Console.WriteLine("Final array values:");
        foreach (var value in myArray)
        {
            Console.Write(value + " ");
        }
    }
    static void WriteToMyArray(object value)
    {
        for (int i = 0; i < myArray.Length; i++)
        {
            // 非原子的写入操作
            myArray[i] = (int)value;
            Thread.Sleep(10); // 模拟其他耗时操作
        }
    }
}