/// <summary>第二个异步调用的按钮
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnyb2_Click(object sender, EventArgs e)
{
this.tbYB2.AppendText("老刘想洗澡了...\r\n");
Heater heater = new Heater();
heater.SetTemp = 85;
LaoLiu laoliu = new LaoLiu(heater);
this.tbYB2.AppendText("老刘开始烧水...\r\n");
//老刘打开热水器，然后去看电视了
laoliu.OpenHeater(ActionCallBack);
this.tbYB2.AppendText(laoliu.WatchTv());
this.tbYB2.AppendText(laoliu.ListenToSong());
}
/// <summary>异步按钮的调用
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnYB_Click(object sender, EventArgs e)
{
this.tbYB.AppendText("老刘想洗澡了...\r\n");
Heater heater = new Heater();
heater.SetTemp = 85;
LaoLiu laoliu = new LaoLiu(heater);
this.tbYB.AppendText("老刘开始烧水...\r\n");
IAsyncResult ar = laoliu.BeginBoilWater(null, null);
//ar.AsyncWaitHandle.WaitOne(2000);
this.tbYB.AppendText(laoliu.WatchTv());
this.tbYB.AppendText(laoliu.ListenToSong());
/* int i = 0;
//轮询判断异步是否完成
while (!ar.IsCompleted)
{
i++;
this.tbYB.AppendText(" " + i.ToString() + " ");
if (ar.IsCompleted)
{
this.tbYB.AppendText("\r\n水烧好了...\r\n");
}
}
int curTemp = laoliu.EndBoilWater(ar);
this.tbYB.AppendText("当前水温 " + curTemp.ToString() + " 度");*/
//WaitOne 作用 等待句柄
bool flag = true;
while (flag)
{
this.tbYB.AppendText(string.Format("老刘去看了一眼,水还没烧好,当前水温 {0} 度...\r\n", heater.CurrentTemp));
flag = !ar.AsyncWaitHandle.WaitOne(1000);
}
this.tbYB.AppendText("水烧好了...\r\n");
int curTemp = laoliu.EndBoilWater(ar);
this.tbYB.AppendText("当前水温 " + curTemp.ToString() + " 度");
}