C# 线程之间的数据交互

一. 子线程的数据,赋给主线程的控件

1.实例化线程

 //消息线程
Thread receiveThread = new Thread(new ThreadStart(ReceiveMessageThread));//ReceiveMessageThread为线程的回调方法
receiveThread.IsBackground = true; //设置线程为后台线程.(设置成后台线程后,前台主线程关闭,则此后台线程将强制关闭)
receiveThread.Start(); //启动线程

 

2. 线程回调方法

//定义委托,用于后台线程与主线程的数据交互
public delegate void FuncHandle(string strMessage);

private void ReceiveMessageThread()
        {
            while (true)
            {
                Thread.Sleep(1000);
                FuncHandle fh = new FuncHandle(SetFormReceiveMessage);//实例化委托
                if (this.InvokeRequired)
                {
                    this.BeginInvoke(fh, new object[] { "方法参数值strMessage"});
                }
            }
        }

3. 与主线程交互

//显示接收的消息
private void SetFormReceiveMessage(string strMessage)
{

this.txtMessageBox.Text = strMessage;

}

 

二.子线程访问主线程的静态变量

//消息线程
Thread  threadTimer = new Thread(new ThreadStart(SetServerDatetime));
threadTimer.IsBackground = true;
threadTimer.Start();

//设定时间并每隔一秒更新一次
        private void SetServerDatetime()
        {
            while (true)
            {
                Thread.Sleep(1000);

　　　　　　//PublicValue.serverDatetime 为主线程的静态变量(保存时间字符串型)
                string ttk = Convert.ToDateTime(Convert.ToString(PublicValue.serverDatetime)).AddSeconds(1d).ToString();
                //改变时间变量
                Interlocked.Exchange<string>(ref PublicValue.serverDatetime, ttk);
            }
        }