private void refrashStallList(string info)
{
//判断该方法是否被主线程调用，也就是创建labMessage1控件的线程，当控件的InvokeRequired属性为ture时，说明是被主线程以外的线程调用。如果不加判断，会造成异常
if (this.tc_carport.InvokeRequired)
{
//再次创建一个DelegateUpdateUI类的对象
DelegateUpdateUI updateUI = new DelegateUpdateUI();
//为新对象的mainThread对象搭载方法
updateUI.mainThread = new DelegateUpdateUI.updateDelegate(refrashStallList);
//this指窗体，在这调用窗体的Invoke方法，也就是用窗体的创建线程来执行mainThread对象委托的方法，再加上需要的参数(i)
this.Invoke(updateUI.mainThread, new object[] { info });
}
else
{
if (info != null)
{
// playMusic();
switch (info)
{
case "1":
stall1.Image = Properties.Resources.empty;
status_notify.Text = "当前通知：1号车位驶出车辆";
break;
case "2":
stall2.Image = Properties.Resources.empty;
status_notify.Text = "当前通知：2号车位驶出车辆";
break;
case "3":
stall3.Image = Properties.Resources.empty;
status_notify.Text = "当前通知：3号车位驶出车辆";
break;
case "A":
stall1.Image = Properties.Resources.car;
status_notify.Text = "当前通知：1号车位驶入车辆";
break;
case "B":
stall2.Image = Properties.Resources.car;
status_notify.Text = "当前通知：2号车位驶入车辆";
break;
case "C":
stall3.Image = Properties.Resources.car;
status_notify.Text = "当前通知：3号车位驶入车辆";
break;
}
updateStallInfo(info);
}
}
}
private void createDelegate()
{
updateDelegate = new DelegateUpdateUI();
updateDelegate.mainThread = new DelegateUpdateUI.updateDelegate(refrashStallList);
}