private static void GetReturnValue(IAsyncResult res)
{
AsyncResult ar = (AsyncResult)res;
int number = (int)ar.AsyncState;
GetNumDelegate gnd = (GetNumDelegate)ar.AsyncDelegate;
MessageBox.Show(gnd.EndInvoke(res).ToString(), "Called GetNum_1 method with " + number);
}
private void btnTest_Click(object sender, EventArgs e)
{
int number = 10000;
//Gọi phương thức GetNum_1 theo cơ chế không đồng bộ
GetNumDelegate gnd = new GetNumDelegate(GetNum_1);
AsyncCallback acb = new AsyncCallback(GetReturnValue);
IAsyncResult res = gnd.BeginInvoke(acb, number);
//Gọi phương thức GetNum_2
MessageBox.Show(GetNum_2().ToString(), "Called GetNum_2 method !");
}
