c#检测进程是否存在并关闭

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Diagnostics;
using System.Windows.Forms;
 
namespace WindowsFormsApplication3
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
 
        private void button1_Click(object sender, EventArgs e)
        {
            Process[] ps = Process.GetProcessesByName("chrome");
            if (ps.Length > 0)
            {
                foreach (Process p in ps)
                    p.Kill();
            }
        }
    }
}