C# 对象引用未设置为对象的实例（矩形数组）

我想用C#制作一个游戏，有关卡，每个关卡都有更多的对象

我有以下代码：

Rectangle character, plus10;

Rectangle[] eraser, compass;


private void Initialize()
{            
    character = new Rectangle(_x, (int)_y, 40, 40);
    for (int i = 1; i <= objects; i++)
    {
        eraser[i] = new Rectangle(_m[i], 400, 40, 40);//I get the error here
        compass[i] = new Rectangle(_m[i], 400, 40, 40);//And here
    }
    plus10 = new Rectangle(_n, 400, 40, 40);
}


private void Form1_Paint(object sender, PaintEventArgs e)
{
        e.Graphics.DrawImage(new Bitmap(Happy_Math.Properties.Resources.background), 0, 0);
        if (_plrPos == playerPosition.Up)
        {
            e.Graphics.DrawImage(new Bitmap(Happy_Math.Properties.Resources.jump), _x, _y);
        }
        else if (_plrPos == playerPosition.Down)
        {
            e.Graphics.DrawImage(new Bitmap(Happy_Math.Properties.Resources.slide), _x, _y);
        }
        else
        {
            if (runImg == 1)
            {
                e.Graphics.DrawImage(new Bitmap(Happy_Math.Properties.Resources.run1), _x, _y);
                runImg = 2;
            }
            else if (runImg == 2)
            {
                e.Graphics.DrawImage(new Bitmap(Happy_Math.Properties.Resources.run2), _x, _y);
                runImg = 1;
            }
        }
        for (int i = 1; i <= objects; i++)
        {
            if (_obj[i] % 2 == 0)
            {
                e.Graphics.DrawImage(new Bitmap(Happy_Math.Properties.Resources.eraser), _m[i], 400);
            }
            else if (_obj[i] % 2 == 1)
            {
                e.Graphics.DrawImage(new Bitmap(Happy_Math.Properties.Resources.compass), _m[i], 400);
            }
        }
        e.Graphics.DrawImage(new Bitmap(Happy_Math.Properties.Resources._10), _n, 400);

        Initialize();
    }

---

您能帮助我吗？

您应该在定义数组时或在

initialize

方法中初始化数组：

Rectangle[] eraser = new Rectangle[objects.Length];
Rectangle[] compass = new Rectangle[objects.Length];

如果您不知道元素计数，请使用

列表
几乎不可能“猜测”解决方案，但这看起来很可疑：

for (int i = 1; i <= objects; i++)

for（int i=1；i）您需要先分配橡皮擦和指南针阵列，然后再将元素分配给它们。
for (int i = 1; i <= objects; i++)

for (int i = 0; i < objects; i++)