用C#做的进度条不会循环。。。

Question

刚用C#做的那个程度条不会循环。我用的 time控件。（我初学多多指点）
还有哪里要改一下：
namespace _02
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        private void timer1_Tick(object sender, EventArgs e)
        {
            if (progressBar1.Value >= 200)
            {
                progressBar1.Value = 0;
                return;
            }
            progressBar1.Value += 20;
                    }
    }
}

Answer 1

progressBar1.Minimum = 0;
 progressBar1.Maximum = 200;

Answer 2

if (progressBar1.Value >= progressBar1.Maximum)
{
    progressBar1.Value = 0;
    return;
}
progressBar1.Value += 20;

Answer 3

感谢“jnwfh(海蛎子）”
你说的办法。是对了。谢谢你：）

Answer 4

public Form1()
        {
            InitializeComponent();
        }        private void timer1_Tick(object sender, EventArgs e)
        {
            int intValue = this.progressBar1.Value;
            if (progressBar1.Value >= this.progressBar1.Maximum)
            {
                intValue = -20;
            }
            progressBar1.Value = intValue+20;
        }