private void buttonRun_Click(object sender, EventArgs e)
{
PSO pso = new PSO();
PSOCAL psoHandle = new PSOCAL(pso.demethod);
MessageBox.Show("Begin!");
watch.Reset();
watch.Start();
IAsyncResult result = psoHandle.BeginInvoke(new AsyncCallback(decallback), null);
}
public void decallback(IAsyncResult result)
{
//result 是“PSO.pso()方法”的返回值
//AsyncResult 是IAsyncResult接口的一个实现类，空间：System.Runtime.Remoting.Messaging
//AsyncDelegate 属性可以强制转换为用户定义的委托的实际类。
//注意: BeginInvoke和EndInvoke必须成对调用.即使不需要返回值，但EndInvoke还是必须调用，否则可能会造成内存泄漏。
PSOCAL decal = (PSOCAL)((AsyncResult)result).AsyncDelegate;
if (result.IsCompleted)
{
watch.Stop();
string time = watch.Elapsed.ToString();
string tempStr01 = "Solve the Problem!\n";
string tempStr02 = string.Format("Using time is {0}", time);
string finalStr = tempStr01 + tempStr02;
MessageBox.Show(finalStr);
}
decal.EndInvoke(result);
}
