winform 线程挂起无效果

Question

代码如下：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Threading;namespace pro7
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        public Thread t;
        private void Form1_Load(object sender, EventArgs e)
        {
            CheckForIllegalCrossThreadCalls = false;
            t = new Thread(gettime);
            t.Start();
        }
        public void gettime()
        {
            while (true)
            {
                textBox1.Text = DateTime.Now.ToString();
                Thread.Sleep(1000);
            }
        }        private void button1_Click(object sender, EventArgs e)
        {
            if (t.ThreadState == ThreadState.Running)
            {
                t.Suspend();
            }
        }        private void button2_Click(object sender, EventArgs e)
        {
            if (t.ThreadState == ThreadState.Suspended || t.ThreadState == ThreadState.SuspendRequested)
            {
                t.Resume();
            }
        }
    }
}

Answer 1

using System;
using System.Threading;
using System.Windows.Forms;namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }        private ManualResetEvent _ManualResetEvent = new ManualResetEvent(true);
        private Boolean _bAbort = false;        private void Form1_Load(object sender, EventArgs e)
        {
            CheckForIllegalCrossThreadCalls = false;
            Thread t = new Thread(gettime);
            t.Start();
        }        public void gettime()
        {
            while (!_bAbort)
            {
                textBox1.Text = DateTime.Now.ToString();
                Thread.Sleep(1000);                _ManualResetEvent.WaitOne();
            }
        }        private void button1_Click(object sender, EventArgs e)
        {
            _ManualResetEvent.Reset();
        }        private void button2_Click(object sender, EventArgs e)
        {
            _ManualResetEvent.Set();
        }        private void Form1_FormClosing(object sender, FormClosingEventArgs e)
        {
            _bAbort = true;
        }
    }
}那两个方法已经过期了
虽然还能用
但推荐使用同步方法