private void button2_click(object sender, system.eventargs e)
  {
   string[] a=new string[2];
   a[0]="aa";
   a[1]="bb";
   application.add("a",a);//將值賦給 application["a"]
  }

  private void button3_click(object sender, system.eventargs e)
  {
   this.listbox1.items.clear();//清除列表里的值
   string[] b=(string[])application["a"];//將值賦給數(shù)組 b
    for (int i=0;i<b.length;i++)
    {
    this.listbox1.items.add(b[i]);
    }
  }