指在一线程里面调用另一线程join方法时，表示将本线程阻塞直至另一线程终止时再执行
比如
- using System;
-
- namespace TestThreadJoin
- {
- class Program
- {
- static void Main()
- {
- System.Threading.Thread x = new System.Threading.Thread(new System.Threading.ThreadStart(f1));
- x.Start();
- Console.WriteLine("This is Main.{0}", 1);
- x.Join();
- Console.WriteLine("This is Main.{0}", 2);
- Console.ReadLine();
- }
- static void f1()
- {
- System.Threading.Thread y = new System.Threading.Thread(new System.Threading.ThreadStart(f2));
- y.Start();
- y.Join();
- Console.WriteLine("This is F1.{0}",1);
- }
-
- static void f2()
- {
- Console.WriteLine("This is F2.{0}", 1);
- }
- }
- }
这儿有三个线程在处理(包括主线程),大家可看看执行结果. 结果: This is Main.1 This is F2.1 This is F1.1 This is Main.2
如果: 注释// x.Join(); 结果: This is Main.1 This is Main.2 This is F2.1 This is F1.1 
