在Csharp中，如何计算每次单击特定按钮时都会增加的某个值

using System;
using System.Windows.Forms;

namespace ButtonClickCounter
{
    public partial class Form1 : Form
    {
        private int clickCount = 0;

        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            clickCount++;
            label1.Text = "点击次数：" + clickCount.ToString();
        }
    }
}