代理异步调用WEB服务

客户端创建AsyncCallback委托的一个实例

  public   class TheConsumer
    {
        static void CallBack(IAsyncResult ar)
        {
            TheBank bank = (TheBank)ar.AsyncState;
            Acct acct = bank.EndGetAccount(ar);
            Console.WriteLine(acct.description);
        }

        static void Main(string[] args)
        {
            TheBank bank = new TheBank();
            AsyncCallback callback;
            callback = new AsyncCallback(TheConsumer.CallBack);
            bank.BeginGetAccount("232", callback, bank);
            Console.ReadLine();
        }
    }

    [XmlRoot("Account")]
    public class Acct
    {
        [XmlElement("description")]
        public string description;
        [XmlElement("number")]
        public string number;
        [XmlElement("type")]
        public string type;
    }


    public class TheBank
    {
        public Acct GetAccount(string acctnumber)
        {
            Acct a = new Acct();
            a.description = "this a test";
            a.number = acctnumber;
            a.type = "soap";
            return a;
        }
    }