写使用两个线程文本框 [英] Writing to a textBox using two threads

问题描述

我有一个线程一些尚未解决的问题。这是我第一次这样做。我知道如何使用一个线程在一个文本框写的，但我不知道怎么用他们两个做的工作。任何人有什么线索做我必须做的是能够使用两个线程写入同一个文本框，但不是在同一时间。谢谢你。

I have some unsolved issue with threads. It's my first time doing it. I know how to use one thread to write in a textBox, but I have no idea how to use two of them to do the job. Anyone have a clue what do I have to do to be able to use two threads to write to the same textBox, but not in the same time. Thank you.

推荐答案

下面是一个使用两个线程写入的随机数到多行文本框的例子。由于布兰登和Jon B中指出，你需要使用的invoke（）的调用GUI线程序列化。

Here's an example that uses two threads to write random numbers to a multi-line text box. As Brandon and Jon B noted, you need to use Invoke() to serialize the calls to the GUI thread.

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

    Random m_random = new Random((int)DateTime.Now.Ticks);
    ManualResetEvent m_stopThreadsEvent = new ManualResetEvent(false);

    private void buttonStart_Click(object sender, EventArgs e)
    {
        Thread t1 = new Thread(new ThreadStart(ThreadOne));
        Thread t2 = new Thread(new ThreadStart(ThreadTwo));

        t1.Start();
        t2.Start();
    }

    private void ThreadOne()
    {
        for(;;)
        {
            int n = m_random.Next(1000);
            AppendText(String.Format("One: {0}\r\n", n));
            if(m_stopThreadsEvent.WaitOne(n))
            {
                break;
            }
        }
    }

    private void ThreadTwo()
    {
        for(;;)
        {
            int n = m_random.Next(1000);
            AppendText(String.Format("Two: {0}\r\n", n));
            if(m_stopThreadsEvent.WaitOne(n))
            {
                break;
            }
        }
    }

    delegate void AppendTextDelegate(string text);

    private void AppendText(string text)
    {
        if(textBoxLog.InvokeRequired)
        {
            textBoxLog.Invoke(new AppendTextDelegate(this.AppendText), new object[] { text });
        }
        else
        {
            textBoxLog.Text = textBoxLog.Text += text;
        }
    }

    private void Form1_FormClosing(object sender, FormClosingEventArgs e)
    {
        m_stopThreadsEvent.Set();
    }
}

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