如何准确地刷新进度 [英] How to refresh ProgressBar accurately

问题描述

我写了使用for循环2次短的方法：

I wrote a short method that uses a for loop 2 times:

progressBar1.Minimum = 1;
progressBar1.Maximum = 1000000;
progressBar1.Step = 1;

for (int idx = 1; idx < 1000000; idx++)
{    
    progressBar1.PerformStep();
}

Thread.Sleep(2000);
progressBar1.Invalidate();
this.Update();

progressBar1.Value = 1;
for (int idx = 1; idx < 1000000; idx++)
{
    progressBar1.PerformStep();
}

我的问题是：一号通，当值获得1000000实际的彩色条仅
横跨显示约50-75％，但从来没有100％的跨越，即使值已达到最大值。

My question is this: on the 1st pass, when the value gets to 1000000 the actual colored bar only displays about 50-75% across, but never 100% across, even though the value has reached the maximum.

这是独一无二的多次使用进度的一种方法。

This is unique to using the progressbar multiple times in one method.

我怎样才能得到实际的彩色条获得到最后？

How can I get the actual colored bar to get to the very end?

（显然它是一个缓冲的事情吗？）

(Apparently its a buffering thing?)

推荐答案

现在的问题是，你阻止您的UI线程。不要那样做。在后台线程执行所有的长时间运行的任务（如的BackgroundWorker ）和元帅回UI线程更新进度条（ BackgroundWorker的使得这很琐碎）...然后就一切正常了。

The problem is that you're blocking your UI thread. Don't do that. Perform all the long-running tasks in a background thread (e.g. a BackgroundWorker) and marshal back to the UI thread to update the progress bar (BackgroundWorker makes this pretty trivial)... then all should be well.

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