基于C#实现平滑流畅的进度条ProgressBar

//状态枚举
public enum dev_run_status
{
    null,
    idle,
    starting,
    running, 
    stoping,
}

running_step startrunningstep = running_step.ready;//开始运行步骤变量，ready

//初始化加载
private void form_main_load(object sender, eventargs e)
{
	progressbar.style = progressbarstyle.marquee;//指定样式
	progressbar.marqueeanimationspeed = 30; // 指定动画速度
}

private void btncontrolstart_click(object sender, eventargs e)
{	 
		if (startrunningstep == running_step.ready)
		{
			 //运行开始显示进度条
			 progressbar.visbile = true;
		}
		else if (startrunningstep == running_step.stoping)
		{
				//运行结束隐藏进度条
				progressbar.visbile = false;
		}
}

/// </summary>
///开始和结束
/// </summary>
private void btncontrolstart_click(object sender, eventargs e)
{	 
	if (startrunningstep == running_step.ready)
	{
		//运行开始显示进度条
		progressbar.visbile = true;
		//启用百分比文字显示
		toolstripstatuslabel_percentage.visible = true;
		// 启动后台进度条任务，时间作为输入参数
		task.run(() => dorealprogress(timer_finish.interval)); 
	}
	else if (startrunningstep == running_step.stoping)
	{
		//运行结束隐藏进度条
		progressbar.visbile = false;
		//关闭百分比显示
		toolstripstatuslabel_percentage.visible = false;
	}
}

/// <summary>
/// 按时间比例自动计算进度
/// </summary>
private async void dorealprogress(int totalms)
{
     //读取开始时间作为分母
    datetime starttime = datetime.now;
    // 每100ms刷新一次，比较平滑流畅
    int refreshinterval = 100; 

    while (isstartrunning)
    {
			// 计算已用时间
			double elapsedms = (datetime.now - starttime).totalmilliseconds;
			
			// 计算百分比（0~100）读取当前时间除以开始时间获取百分比
			int percent = (int)(elapsedms / totalms * 100);
			// 防止超过100
			percent = math.min(percent, 100); 
			
			// 委托更新ui
			this.invoke(new action(() => {
					//设置百分比
					progressbar.value = percent;
					//文本显示百分比
					toolstripstatuslabel_percentage.text = $"{percent}%";
			}));
		    
		     //延时
		    await task.delay(refreshinterval);
    }
}