c#中多线程的问题

郁闷的是，在点击停止后中奖结果竟然与上面六个label里显示的字符串不一样。。。

C# code

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 摇奖机{    public partial class Form1 : Form    {                public Form1()        {                        InitializeComponent();        }        Thread n1;        bool isStart = false;        private void btnControl_Click(object sender, EventArgs e)        {                        if (isStart == false)            {                n1 = new Thread(NumberChange);                n1.Start();                isStart = true;                btnControl.Text = "结束";                            }            else            {                n1.Abort();                isStart = false;                btnControl.Text = "开始";                if (n1.ThreadState == ThreadState.Aborted)                {                                        labResult.Text = "中奖结果：" + labnum1.Text + labnum2.Text + labnum3.Text + labnum4.Text + labnum5.Text + labnum6.Text;                }            }        }        void end()        {            n1.Abort();        }        private void NumberChange()        {                        Random ran = new Random();            delegateSafeThread = SetLabText;            while (true)            {                labnum1.Invoke(delegateSafeThread, ran, labnum1);                labnum2.Invoke(delegateSafeThread, ran, labnum2);                labnum3.Invoke(delegateSafeThread, ran, labnum3);                labnum4.Invoke(delegateSafeThread, ran, labnum4);                labnum5.Invoke(delegateSafeThread, ran, labnum5);                labnum6.Invoke(delegateSafeThread, ran, labnum6);            }                    }        NumberChangeDelegate delegateSafeThread;        private void SetLabText(Random ran,Label lab )        {                           lab.Text = ran.Next(10).ToString();                        }        private void Form1_FormClosing(object sender, FormClosingEventArgs e)        {            if (isStart)            {                e.Cancel = true;                MessageBox.Show("关闭前请先停止摇奖");            }        }            }    delegate void NumberChangeDelegate(Random ran, Label lab);    }

[解决办法]
发现一个新的问题，你这里线程中使用了Invoke，出现了线程的回调，也就是说，Invoke内部执行的方法是必须在btnControl_Click方法结束后才会执行，那么你的改变将无法同步也是那个造成的。
方法有二：
一、直接修改Label的Text属性，设置CheckForIllegalCrossThreadCalls = false;

二、用中间变量存储，让改变先即时修改这些共享的变量。
[解决办法]

C# code

using System;using System.Threading;using System.Windows.Forms;namespace WindowsFormsApplication1{    public partial class Form1 : Form    {        public Form1()        {            InitializeComponent();        }        Thread n1;        bool isStart = false;        NumberChangeDelegate delegateSafeThread;        delegate void NumberChangeDelegate(Random ran, Label lab);        private void btnControl_Click(object sender, EventArgs e)        {            if (isStart == false)            {                n1 = new Thread(NumberChange);                n1.Start();                isStart = true;                btnControl.Text = "结束";            }            else            {                isStart = false;                btnControl.Text = "开始";            }        }        private void NumberChange()        {            Random ran = new Random();            delegateSafeThread = SetLabText;            while (isStart)            {                labnum1.Invoke(delegateSafeThread, ran, labnum1);                labnum2.Invoke(delegateSafeThread, ran, labnum2);                labnum3.Invoke(delegateSafeThread, ran, labnum3);                labnum4.Invoke(delegateSafeThread, ran, labnum4);                labnum5.Invoke(delegateSafeThread, ran, labnum5);                labnum6.Invoke(delegateSafeThread, ran, labnum6);            }            labResult.Invoke(new MethodInvoker(delegate() {labResult.Text = "中奖结果：" + labnum1.Text + labnum2.Text + labnum3.Text + labnum4.Text + labnum5.Text + labnum6.Text;}));        }        private void SetLabText(Random ran, Label lab)        {            lab.Text = ran.Next(10).ToString();        }        private void Form1_FormClosing(object sender, FormClosingEventArgs e)        {            if (isStart)            {                e.Cancel = true;                MessageBox.Show("关闭前请先停止摇奖");            }        }    }}