有一种方法可以使用C#中的变量参数传递引用吗？

public static void Main()
{
    int a = 10;
    int b = 20;

    Console.WriteLine("Before Swap: a = {0}, b = {1}", a, b);
    Swap(ref a, ref b);
    Console.WriteLine("After Swap: a = {0}, b = {1}", a, b);
}

public static void Swap(ref int x, ref int y)
{
    int temp = x;
    x = y;
    y = temp;
}