progressBar1.Maximum = 100;//設置最大長度值
progressBar1.Value = 0;//設置當前值
progressBar1.Step = 5;//設置沒次增長多少
for (int i = 0; i < 10; i++)//循環
{
System.Threading.Thread.Sleep(1000);//暫停1秒
progressBar1.Value += progressBar1.Step;讓進度條增加一次
}