C#在单独的线程中填写进度条

Question

我有一个进度条,并希望使用一个单独的线程填充它,因为主线程在循环中被暂停几秒钟.我正在使用计时器,以便进度条在一定时间内填满.

线程创建:

private void PlayButton_Click(object sender, EventArgs e)
        {
            progressBar1.Value = 0;
            int playTime = getPlayTime();
            int progressInterval = playTime / 100;
            Thread progressThread = new Thread(barfiller=>fillBar(progressInterval));
            progressThread.Start();

            //Loops through the collection and plays each note one after the other
            foreach (MusicNote music in this.staff.Notes)
            {
                music.Play(music.Dur);
                Thread.Sleep(music.getInterval(music.Dur));
            }
            progressThread.Abort();
        }

按原样,进度条没有任何反应,但是如果我在主线程中调用fillbar(),它就可以工作但是在for循环完成之后填充它,而不是在for循环之前/期间,即使我在之前调用fillbar()环.

线程方法:

private void fillBar(int progressInterval)
        {
            progressTimer = new System.Windows.Forms.Timer();
            progressTimer.Tick += new EventHandler(clockTick);
            progressTimer.Interval = progressInterval; //How fast every percentage point of completion needs to be added
            progressTimer.Start();

        }

        public void clockTick(object sender, EventArgs e)
        {
            if (progressBar1.Value < 100)
            {
                progressBar1.Value++;
            }
            else
            {
                progressTimer.Stop();
            }

        }

Answer 1

你这样做是错误的.主线程负责更新用户界面.因此,如果您使用计算阻止它,它将无法绘制进度条.将您的计算代码移到另一个线程中,应该没问题.