当我的程序使用后台工作程序进行工作时，如何防止表单为空？

Question

On a regular basis I find myself writing little utility programs that use some loop which takes a while to process. Yet while the loop is going the form no longer refreshes so if you were to move the form, or move another window over it and off, the form would be blank until the loop finishes.

Now I know the correct way to deal with this is to use a background working to do the time consuming task on a separate thread. But I haven't quite got my head around the multi threaded stuff just yet.

So If I'm only going to use one thread what is the best thing to do on each loop to keep the contents of the form up to date. For example there may be a progress bar in the form.

I've seen and used various combonations of Form.Refresh(), Form.Update(), and Application.DoEvents() but was wondering what is the best way to deal with this?

Answer 1

您可以在代码的不同位置使用Application.DoEvents（）进行伪造，但实际上应该将工作放到另一个线程中。

Answer 2

Take it as an opportunity to get into threading, you will have to sooner or later.

The Bgw makes it easy: The DoWork event runs on another thread but ProgressChange and Completed are synchronized on the main thread.

Find a few examples and be careful when you use shared data inside DoWork.