学习笔记——线程 Thread
Thread是.net1.0 1.1时出现的
主要了解线程等待、回调、前后台线程区别
1.实例：
//定义：public delegate void ThreadStart();
ThreadStart threadStart = new ThreadStart(() =>
Thread.Sleep(5000);
this.DoSomethingLong("btnThreads_Click");
});
Thread thread = new Thread(threadStart);
//thread.IsBackground = true;//变成后台线程
thread.Start();//默认是前台线程，UI线程退出后，还会继续执行完；后台线程就直接退出了
2.等待（如果线程执行完毕，dosomething()）
while (thread.ThreadState != System.Threading.ThreadState.Running)
{
dosomething()
}
3.获取线程执行后的返回值
///
/// 带返回值的
///
///
///
///
private Func
T t = default(T);
ThreadStart startNew = new ThreadStart(
() =>
{
t = funcT.Invoke();
});
Thread thread = new Thread(startNew);
thread.Start();
return new Func
{
thread.Join();//线程执行完才返回t.（主线程会等待子线程完成）
return t;
});
调用方法获取返回值
Func
{
Thread.Sleep(2000);
Console.WriteLine($"这里是ThreadStart {Thread.CurrentThread.ManagedThreadId.ToString("00")}");
return 12345;
});
Console.WriteLine("已经执行到这里了。。。");
int iResult = func.Invoke();//endinvoke
4.回调
///
/// 基于Thread封装支持回调
/// BeginInvoke的回调
///
///
///
private void ThreadWithCallback(ThreadStart threadStart, Action callback)
ThreadStart startNew = new ThreadStart(
() =>
{
threadStart();
callback.Invoke();
});
Thread thread = new Thread(startNew);
thread.Start();
//委托的异步调用 测试:ThreadWithCallback
this.ThreadWithCallback(() =>
Thread.Sleep(2000);
Console.WriteLine($"这里是ThreadStart {Thread.CurrentThread.ManagedThreadId.ToString("00")}");
, () =>
{
Thread.Sleep(2000);
Console.WriteLine($"这里是callback {Thread.CurrentThread.ManagedThreadId.ToString("00")}");
});
参考资料：http://www.cnblogs.com/lvcy/archive/2012/06/16/2551539.html