C#Winform后台工作程序和进度条 [英] c# winform background worker and progress bar

问题描述

我正在尝试使用BG Worker来增加进度条. 我目前正在使用2个BG工人，一个将数据添加到数据库中，一个用于进度条.数据库上传工作正常，但进度条却没有.

I am trying to get the progress bar to increment using a BG Worker. I am currently using 2 BG workers, one to add data into a DB and one for the progress bar. The DB upload is working fine, yet the progress bar is not.

代码:

BackgroundWorker bg2 = new BackgroundWorker();
bg2.DoWork +=new DoWorkEventHandler(bg2_DoWork);
bg2.RunWorkerAsync();

void bg2_DoWork(object sender, DoWorkEventArgs e)
    {

        while (bg1.IsBusy)
            DrawWellPlate.pbar.Increment(1)
    }

bg1所指的是数据库上传线程，而pbar显然是进度条.

bg1 that it refers to is the database upload thread and pbar is clearly the progress bar.

谢谢.

推荐答案

您应该执行以下操作 其中totalProgress将显示在progressBar中，doWork不在UI线程中执行，这就是BackgroundWorker的目的

You should do something like this where totalProgress will be shown in progressBar, doWork is executed not in UI thread, that is the purpose of BackgroundWorker

BackgroundWorker bg2 = new BackgroundWorker();
bg2.DoWork +=new DoWorkEventHandler(bg2_DoWork);
.ProgressChanged += new ProgressChangedEventHandler(bg2_ProgressChanged)
bg2.RunWorkerAsync();

void bg2_DoWork(object sender, DoWorkEventArgs e)
    {

        while (bg1.IsBusy)
            worker.ReportProgress(totalProgress);
    }
private void bg2_ProgressChanged(object sender,
            ProgressChangedEventArgs e)
        {
            DrawWellPlate.pbar.Value = e.ProgressPercentage;
        }

有关更多详细信息，请参见此

see this for more details

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