线程同步问题

Question

窗体中有一个label1
调用线程让它每隔1毫秒向左移动1个单位
编译时线程同步出现错误,
要用委托吗？如何实现同步？
求高手解答.在线等

Answer 1

使用委托操作相关控件
Invoke操作
private void Form1_Load(System.Object sender, System.EventArgs e)
{
System.Threading.Thread td = new System.Threading.Thread(TEST);
td.Start();
}
public delegate void move();
public void TEST()
{
if (Label.InvokeRequired == false) {
}  
  else {}
}

Answer 2

        private delegate void Idelegate(Button a,Button b);
        private void move(Button a, Button b)
        {
            
            int i = a.Location.X;
            int n = b.Location.X;
            int count = 50;
            while (count>0)
            {
                Thread.Sleep(1);
                a.Location = new Point(i, a.Location.Y);
                i += 2;
                b.Location = new Point(n, b.Location.Y);
                n -= 2;
                count--;
            }
        }
        private void demo()
        {
            if (thread.IsBackground)
            {
                move(button1, button2);
            }
            else
            {
                Idelegate dg = move;
                //dg.Invoke();
                //dg(button1, button2); 
     
            }
        }
        private void button1_MouseDown(object sender, MouseEventArgs e)
        {
            thread = new Thread(demo);
            thread.Start();        }求帮改下 

Answer 3

1.1毫秒的间隔没有意义，因为我们的windows本就不是实时操作系统，没那么块响应速度。
2.老问题。看博客
http://blog.csdn.net/wuyazhe/archive/2010/10/03/5920107.aspx

Answer 4

新建一个空工程，将下面代码加进去
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Threading;namespace ThreadLableTest
{
    public class Form1 : Form
    {
        private System.ComponentModel.IContainer components = null;
        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }
        private void InitializeComponent()
        {
            this.btnStart = new System.Windows.Forms.Button();
            this.label1 = new System.Windows.Forms.Label();
            this.btnStop = new System.Windows.Forms.Button();
            this.SuspendLayout();
            this.btnStart.Location = new System.Drawing.Point(176, 107);
            this.btnStart.Name = "btnStart";
            this.btnStart.Size = new System.Drawing.Size(75, 23);
            this.btnStart.TabIndex = 0;
            this.btnStart.Text = "开始移动";
            this.btnStart.UseVisualStyleBackColor = true;
            this.btnStart.Click += new System.EventHandler(this.btnStart_Click);
            this.label1.AutoSize = true;
            this.label1.Location = new System.Drawing.Point(12, 39);
            this.label1.Name = "label1";
            this.label1.Size = new System.Drawing.Size(59, 12);
            this.label1.TabIndex = 1;
            this.label1.Text = "移动Label";
            this.btnStop.Location = new System.Drawing.Point(257, 107);
            this.btnStop.Name = "btnStop";
            this.btnStop.Size = new System.Drawing.Size(75, 23);
            this.btnStop.TabIndex = 2;
            this.btnStop.Text = "停止移动";
            this.btnStop.UseVisualStyleBackColor = true;
            this.btnStop.Click += new System.EventHandler(this.btnStop_Click);
            // 
            // Form1
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(345, 208);
            this.Controls.Add(this.btnStop);
            this.Controls.Add(this.label1);
            this.Controls.Add(this.btnStart);
            this.MaximizeBox = false;
            this.MinimizeBox = false;
            this.Name = "Form1";
            this.Text = "线程测试";
            this.FormClosing += new System.Windows.Forms.FormClosingEventHandler(this.Form1_FormClosing);
            this.ResumeLayout(false);
            this.PerformLayout();        }
        private System.Windows.Forms.Button btnStart;
        private System.Windows.Forms.Label label1;
        private System.Windows.Forms.Button btnStop;
        private volatile bool _shouldStop;
        public Form1()
        {
            InitializeComponent();
            _shouldStop = false;        }
        private void btnStart_Click(object sender, EventArgs e)
        {
            _shouldStop = false;
            Thread move = new Thread(new ThreadStart(MoveLabel));
            move.Start();
        }
        private delegate void MoveHandler(Point point);
        private void DoMove(Point point)
        {
            this.label1.Location = point;
        }
        private void MoveLabel()
        {
            while (!_shouldStop)
            {
                Point nowPoint = this.label1.Location;
                Point newPoint = new Point(nowPoint.X + 1, nowPoint.Y);
                this.label1.Invoke(new MoveHandler(DoMove), new object[] { newPoint });
                Thread.Sleep(100);
            }
        }
        private void btnStop_Click(object sender, EventArgs e)
        {
            _shouldStop = true;
        }
        private void Form1_FormClosing(object sender, FormClosingEventArgs e)
        {
            _shouldStop = true;
            Environment.Exit(0);
        }
        [STAThread]
        static void Main()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new Form1());
        }
    }
}

Answer 5

用lock(this)
{
  code;
}