从一个单独的线程访问形式的控制 [英] Accessing a form's control from a separate thread

问题描述

我在练习线程和过这个问题来了。情况是这样的：

I'm practising on threading and came across this problem. The situation is like this:

1. 我有下载文件，一个用于显示在单一表单上4进度条一页面加载状态等等...

1. I have 4 progress bars on a single form, one for downloading a file, one for showing the page loading status etc...

我要控制每个进度从一个单独的线程的进度。

I have to control the progress of each ProgressBar from a separate thread.

问题是我收到的出现InvalidOperationException 它说

跨线程操作无效：控制'progressBar1从比它创建的线程以外
A线程访问

Cross-thread operation not valid: Control 'progressBar1' accessed from a thread other than the thread it was created on.

我错了这种方法或任何人可以告诉我如何实现这一点？

Am I wrong in this approach or can anybody tell me how to implement this?

推荐答案

用户界面元素只能由UI线程访问。 WinForms和WPF / Silverlight中不允许从多个线程访问控制。

The UI elements can only be accessed by the UI thread. WinForms and WPF/Silverlight doesn't allow access to controls from multiple threads.

一个工作围绕这一限制可以在这里找到

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