字段初始值设定项不能引用非静态字段

Question

我不知道为什么这不起作用

public partial class Form1 : Form
{

    public Form1()
    {
        InitializeComponent();
    }
    private Button[,] button = new Button[3, 3]{ {button1, button2, button3 },
                                                 {button4, button5, button6 },
                                                 {button7, button8, button9 } };
    private void button_Click(object sender, EventArgs e)
    {

    }
}

我收到错误

  

字段初始值设定项不能引用非静态字段

所有9个按钮

Answer 1

字段初始值设定项（因为错误明确指出）不能引用非静态字段或值。 button1到button9不是静态的。要获得相同的结果，请在表单的构造函数中移动数组初始化：

private Button[,] button;

public Form1()
{
    InitializeComponent();

    button = new Button[3, 3]{ {button1, button2, button3 },
                                {button4, button5, button6 },
                                {button7, button8, button9 } };
}