创建线程的几种方式(代码示例)

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading;
using System.Windows.Forms;

namespace WinFormsApp_CreateAThread
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        #region 方式2-1 启动线程(带输入参数的)

        private void btn1_Click(object sender, EventArgs e)
        {
            MyObject obj = new MyObject(1, 2);//或者使用全局变量代替obj
            Thread thread = new Thread(obj.FunctionName);
            thread.Start();
        }

        public class MyObject
        {
            public int a1, b1;

            public MyObject(int a, int b)
            {
                a1 = a;
                b1 = b;
            }

            public void FunctionName()
            {
                MessageBox.Show("a:" + a1 + ",b:" + b1);
            }
        }
        #endregion

        #region 方式2-2 启动线程(带输入参数的)

        private void btn2_Click(object sender, EventArgs e)
        {
            Thread thread = new Thread(myStaticParamThreadMethod);
            thread.Start("通过委托的参数传值");
        }

        public static void myStaticParamThreadMethod(Object obj)
        {
            MessageBox.Show(obj.ToString());
        }

        //[ComVisibleAttribute(false)]
        //public delegate void ParameterizedThreadStart(Object obj);
     
        //这个Thread类的构造方法的定义如下：

        //public Thread(ParameterizedThreadStart start);

        #endregion


        #region 方式3 线程池技术

        RegisteredWaitHandle RW;

        private void btn3_Click(object sender, EventArgs e)
        {
            //ThreadPool.QueueUserWorkItem(ThreadProc);//类似于new Thread
              
            RW = ThreadPool.RegisterWaitForSingleObject(wait, new WaitOrTimerCallback(test), state, 1000, false);
            wait.Set();
        }

        AutoResetEvent wait = new AutoResetEvent(false);
        object state = new object();

        int count = 0;

        /// <summary>
        /// 会定时反复调用
        /// </summary>
        private void test(object state, bool timedOut)
        {
            SetText(DateTime.Now.ToString());
            count++;

            if (count > 5) RW.Unregister(wait);//执行5次后，退出 
        }

        /// <summary>
        /// 调用UI线程,修改界面数据
        /// </summary> 
        public void SetText(string argText)
        {
            if (lblResult.InvokeRequired)
            {
                lblResult.Invoke(new SetTextDelegateMethod(SetText), new[] { argText });
            }
            else
                lblResult.Text = argText;
        }
        public delegate void SetTextDelegateMethod(string argText);

        //void ThreadProc(Object stateInfo)
        //{
        //    MessageBox.Show("Hello from the thread pool.");
        //}

        #endregion

    }
}

namespace WinFormsApp_CreateAThread
{
    partial class Form1
    {
        /// <summary>
        /// 必需的设计器变量。
        /// </summary>
        private System.ComponentModel.IContainer components = null;

        /// <summary>
        /// 清理所有正在使用的资源。
        /// </summary>
        /// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }

        #region Windows 窗体设计器生成的代码

        /// <summary>
        /// 设计器支持所需的方法 - 不要
        /// 使用代码编辑器修改此方法的内容。
        /// </summary>
        private void InitializeComponent()
        {
            this.btn1 = new System.Windows.Forms.Button();
            this.btn2 = new System.Windows.Forms.Button();
            this.btn3 = new System.Windows.Forms.Button();
            this.lblResult = new System.Windows.Forms.Label();
            this.SuspendLayout();
            // 
            // btn1
            // 
            this.btn1.Location = new System.Drawing.Point(24, 99);
            this.btn1.Name = "btn1";
            this.btn1.Size = new System.Drawing.Size(141, 44);
            this.btn1.TabIndex = 0;
            this.btn1.Text = "创建线程并带参数传值1";
            this.btn1.UseVisualStyleBackColor = true;
            this.btn1.Click += new System.EventHandler(this.btn1_Click);
            // 
            // btn2
            // 
            this.btn2.Location = new System.Drawing.Point(24, 174);
            this.btn2.Name = "btn2";
            this.btn2.Size = new System.Drawing.Size(141, 39);
            this.btn2.TabIndex = 1;
            this.btn2.Text = "创建线程并带参数传值2";
            this.btn2.UseVisualStyleBackColor = true;
            this.btn2.Click += new System.EventHandler(this.btn2_Click);
            // 
            // btn3
            // 
            this.btn3.Location = new System.Drawing.Point(211, 174);
            this.btn3.Name = "btn3";
            this.btn3.Size = new System.Drawing.Size(131, 39);
            this.btn3.TabIndex = 2;
            this.btn3.Text = "通过线程池创建线程3";
            this.btn3.UseVisualStyleBackColor = true;
            this.btn3.Click += new System.EventHandler(this.btn3_Click);
            // 
            // lblResult
            // 
            this.lblResult.AutoSize = true;
            this.lblResult.Location = new System.Drawing.Point(236, 115);
            this.lblResult.Name = "lblResult";
            this.lblResult.Size = new System.Drawing.Size(41, 12);
            this.lblResult.TabIndex = 3;
            this.lblResult.Text = "label1";
            // 
            // Form1
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(399, 339);
            this.Controls.Add(this.lblResult);
            this.Controls.Add(this.btn3);
            this.Controls.Add(this.btn2);
            this.Controls.Add(this.btn1);
            this.Name = "Form1";
            this.Text = "Form1";
            this.ResumeLayout(false);
            this.PerformLayout();

        }

        #endregion

        private System.Windows.Forms.Button btn1;
        private System.Windows.Forms.Button btn2;
        private System.Windows.Forms.Button btn3;
        private System.Windows.Forms.Label lblResult;
    }
}