用vs2005打开光盘里的这个程序，就能看到进度条控件运行，我自己做个就不行运行就能提示系统日期但没进度条出来，然后我在光盘给的程序里加个toolstripProgressBar2,跟光盘的toolstripProgressBar1都一样了，还是只是有toolstripProgressBar1的运行出来，我想问下，我的问题是出在什么地方？谢谢！


  private void button1_Click(object sender, EventArgs e)
        {
            this.toolStripProgressBar1.Minimum = 0;
            this.toolStripProgressBar1.Maximum = 5000;
            this.toolStripProgressBar1.Step = 2;

            this.toolStripProgressBar2.Minimum = 0;
            this.toolStripProgressBar2.Maximum = 5000;
            this.toolStripProgressBar2.Step = 1;
            for (int i = 0; i <= 4999; i++)
            {
                this.toolStripProgressBar1.PerformStep();
            }

            for (int i = 0; i <= 4999; i++)
            {
                this.toolStripProgressBar2.PerformStep();
            }
         }

我在form1.cs[设计]里加上了toolStripProgressBar2