public partial class Form1 : Form

{

CountdownEvent hander = new CountdownEvent(10);

public static object lock_action = new object();

public Form1()

{

InitializeComponent();

}

private void button1_Click(object sender, EventArgs e)

{

for (int i = 0; i < 10; i++)

{

ThreadPool.QueueUserWorkItem(new WaitCallback(Run1), i);

}

textBox1.Invoke(new Action(() =>

{

textBox1.AppendText("按钮1执行完毕".Log());

}));

}

private void button2_Click(object sender, EventArgs e)

{

//ThreadPool.SetMaxThreads(10, 30);

for (int i = 0; i < 10; i++)

{

ThreadPool.QueueUserWorkItem(new WaitCallback(Run2), i);

}

hander.Wait();

textBox1.AppendText("按钮2执行完毕".Log());

}

private void Run1(object str)

{

Thread.Sleep(1000);

textBox1.AppendText(str.ToString().Log());

}

private void Run2(object str)

{

Thread.Sleep(1000);

textBox1.AppendText(str.ToString().Log());

hander.Signal();

}

}