泡泡排序使用C#窗口应用程序窗体如何清除每次点击label.text按钮

using System;
using System.Windows.Forms;

namespace BubbleSortApp
{
    public partial class Form1 : Form
    {
        private int[] numbers = { 5, 3, 8, 2, 1 };

        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            // 泡泡排序逻辑
            for (int i = 0; i < numbers.Length - 1; i++)
            {
                for (int j = 0; j < numbers.Length - i - 1; j++)
                {
                    if (numbers[j] > numbers[j + 1])
                    {
                        int temp = numbers[j];
                        numbers[j] = numbers[j + 1];
                        numbers[j + 1] = temp;
                    }
                }
            }

            // 清除label.text内容
            label1.Text = "";

            // 显示排序结果
            foreach (int num in numbers)
            {
                label1.Text += num.ToString() + " ";
            }
        }
    }
}