C#中線程與窗體交互的多線程編程實例

代碼：

public partial class Form1 : Form  
{  
    //聲明線程數組  
    Thread[] workThreads = new Thread[10];  
     
    public Form1()  
    {  
        InitializeComponent();  
    }  
     
    //此委托允許異步的調用為Listbox添加Item  
    delegate void AddItemCallback(string text);  
     
    //這種方法演示如何在線程安全的模式下調用Windows窗體上的控件。  
    private void AddItem(string text)  
    {  
        if (this.listBox1.InvokeRequired)  
        {  
            AddItemCallback d = new AddItemCallback(AddItem);  
            this.Invoke(d, new object[] { text });  
        }  
        else
        {  
            this.listBox1.Items.Add(text);  
        }  
    }  
     
    //數據采集方法  
    public void DataGet()  
    {  
        while (true)  
        {  
            AddItem("ok");  
            Thread.Sleep(1000);  
        }  
        //如果此方法退出了，那麼這個線程也就退出了  
    }  
     
    /// <summary>  
    /// 啟動線程  
    /// </summary>
	/// URL：http://www.bianceng.cn/Programming/csharp/201410/45776.htm
    /// <param name="sender"></param>  
    /// <param name="e"></param>  
    private void button1_Click(object sender, EventArgs e)  
    {  
        //循環創建並啟動線程執行  
        for (int i = 0; i < workThreads.Length; i++)  
        {  
            if (workThreads[i] == null)  
            {  
                //如果線程不存在，則創建  
                workThreads[i] = new Thread(new ThreadStart(DataGet));  
                workThreads[i].Name = i.ToString();  
                workThreads[i].Start();  
            }  
            else
            {  
                //已經存在，如果沒有運行，則啟動  
                if (workThreads[i].ThreadState == ThreadState.Aborted || workThreads[i].ThreadState == ThreadState.Stopped)  
                {  
                    workThreads[i] = new Thread(new ThreadStart(DataGet));  
                    workThreads[i].Name = i.ToString();  
                    workThreads[i].Start();  
                }else{  
                    workThreads[i].Start();  
                }  
            }  
        }  
    }  
     
    /// <summary>  
    /// 停止線程  
    /// </summary>  
    /// <param name="sender"></param>  
    /// <param name="e"></param>  
    private void button2_Click(object sender, EventArgs e)  
    {  
        //循環停止線程執行  
        for (int i = 0; i < workThreads.Length; i++)  
        {  
            //如果線程存在，並且狀態不是停止也不是終止的，則終止該線程  
            if (workThreads[i] != null && workThreads[i].ThreadState != ThreadState.Stopped && workThreads[i].ThreadState != ThreadState.Aborted)  
            {  
                workThreads[i].Abort();  
            }  
        }  
    }  
}

源碼下載：http://download.csdn.net/detail/testcs_dn/7618881