什么是背景、前景和前景？主线程？
背景、前景和前景有什么区别？主线程？ .NET 中线程的不同类型有哪些？
what's the difference between background, foreground & main threads? What are the diff types of threads in .NET?
如果你对这篇内容有疑问，欢迎到本站社区发帖提问 参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。
绑定邮箱获取回复消息
由于您还没有绑定你的真实邮箱，如果其他用户或者作者回复了您的评论，将不能在第一时间通知您！
发布评论
评论（3）
后台线程（其 Thread 对象的
Background属性设置为true）将不阻止应用程序退出。
一旦所有正常（前台）线程退出，任何正在运行的后台线程都会立即终止。
此外，如果卸载 AppDomain，则该 AppDomain 中的所有后台线程都会立即中止。
ThreadPool 管理的线程是后台线程。
前台线程是普通线程。
主线程是启动程序的初始线程。 （运行
Main方法的线程）有关详细信息，请参阅
A background thread (whose Thread object has the
Backgroundproperty set totrue) willnot prevent an application from quitting.
Once all normal(foreground) threads have exited, any running background threads are immediately terminated.
In addition, if an AppDomain is unloaded, all background threads in the AppDomain are immediately aborted.
The threads managed by the ThreadPool are background threads.
A foreground thread is an ordinary thread.
The main thread is the initial thread that started the program. (The thread running the
Mainmethod)For more information, see here.
文档中简洁地说明了这种区别。当程序结束时，后台线程被中断。
http://msdn.microsoft.com/en-us /library/h339syd0(VS.71).aspx
The distinction is succinctly stated in the documentation. Background threads are interrupted when the program ends.
http://msdn.microsoft.com/en-us/library/h339syd0(VS.71).aspx
后台线程正是这样，它是从应用程序的 UI 线程在后台运行的线程。在 winforms 应用程序中，UI 线程负责重新绘制 UI 和其他用户交互。
将长时间运行的进程移至后台线程将有助于提高可用性。这是一个很好的介绍文档，供您参考。
A background thread is exactly that, it is a thread that is running in the background from the UI thread of an application. The UI thread in something like a winforms application is the thread responsible for repainting the UI and other user interactions.
Moving long running processes off to a background thread will help improve usability. Here is a good intro document to threading for you.