C# invoke和begininvoke的用法

时间:2021-11-24 04:13:11
namespace invoke和begininvoke的用法
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        //声明接受int的方法并返回空的委托。
        public delegate void invokeDelegate();
        //调用委托,
        // invokeDelegate FF = new invokeDelegate(StartMethod);

        private void button1_Click(object sender, EventArgs e)
        {
            MessageBox.Show(Thread.CurrentThread.GetHashCode().ToString() + "主线程1 最先执行"); // 最先执行
            Thread invokeThread = new Thread(new ThreadStart(StartMethod)); //委托创建线程
            invokeThread.Start(); //开始线程


            string a = string.Empty;
            for (int i = 0; i < 10; i++)      //调整循环次数,看的会更清楚
            {
                Thread.Sleep(1000);
                a = a + "循环执行";
            }
            MessageBox.Show(Thread.CurrentThread.GetHashCode().ToString() +"主线程1"+ a);
            
        }

        private void StartMethod()
        {
            MessageBox.Show(Thread.CurrentThread.GetHashCode().ToString() + "主线程1 第二执行");
            button1.Invoke(new invokeDelegate(invokeMethod)); //传递一个委托的方法;  依赖此控件来执行委托
            //Thread.Sleep(3000);
            MessageBox.Show(Thread.CurrentThread.GetHashCode().ToString() + "子线程1");
        }
        private void invokeMethod()
        {
            //Thread.Sleep(5000);
            MessageBox.Show(Thread.CurrentThread.GetHashCode().ToString() + "主线程1 _执行委托方法");
        }
    }
}

来源 https://www.cnblogs.com/lsgsanxiao/p/5523282.html;