I read the book C# 4.0: The Complete Reference of Herbert Schildt. The author use join to give a solution :
class MyThread
{
public int Count;
public Thread Thrd;
public MyThread(string name)
{
Count = 0;
Thrd = new Thread(this.Run);
Thrd.Name = name;
Thrd.Start();
}
// Entry point of thread.
void Run()
{
Console.WriteLine(Thrd.Name + " starting.");
do
{
Thread.Sleep(500);
Console.WriteLine("In " + Thrd.Name +
", Count is " + Count);
Count++;
} while (Count < 10);
Console.WriteLine(Thrd.Name + " terminating.");
}
}
// Use Join() to wait for threads to end.
class JoinThreads
{
static void Main()
{
Console.WriteLine("Main thread starting.");
// Construct three threads.
MyThread mt1 = new MyThread("Child #1");
MyThread mt2 = new MyThread("Child #2");
MyThread mt3 = new MyThread("Child #3");
mt1.Thrd.Join();
Console.WriteLine("Child #1 joined.");
mt2.Thrd.Join();
Console.WriteLine("Child #2 joined.");
mt3.Thrd.Join();
Console.WriteLine("Child #3 joined.");
Console.WriteLine("Main thread ending.");
Console.ReadKey();
}
}