异步调用WebServices

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

using System.Xml.Serialization;
using System.Web.Services.Protocols;
using System.Web.Services;

namespace PaymentChannel.Biz.Proxy
{
??? /// <remarks/>
??? [System.Diagnostics.DebuggerStepThroughAttribute()]
??? [System.ComponentModel.DesignerCategoryAttribute("code")]
??? [System.Web.Services.WebServiceBindingAttribute(Name = "WebServicesSoap",Namespace = "http://tempuri.org/")]
??? public class VBWebServices : System.Web.Services.Protocols.SoapHttpClientProtocol
??? {
??????? /// <remarks/>
??????? public VBWebServices()
??????? {
??????????? this.Url = "http://map.vnetone.com/showpinfo.asmx";
??????? }

??????? /// <remarks/>
??????? [System.Web.Services.Protocols.SoapDocumentMethodAttribute("http://tempuri.org/GetMapInfoForProvice",RequestNamespace = "http://tempuri.org/",ResponseNamespace = "http://tempuri.org/",Use = System.Web.Services.Description.SoapBindingUse.Literal,ParameterStyle = System.Web.Services.Protocols.SoapParameterStyle.Wrapped)]
??????? public string GetMapInfoForProvice(string pcode)
??????? {
??????????? object[] results = this.Invoke("GetMapInfoForProvice",new object[] {
??????????????????????? pcode});
??????????? return ((string)(results[0]));
??????? }

??????? /// <remarks/>
??????? public System.IAsyncResult BeginGetMapInfoForProvice(string pcode,System.AsyncCallback callback,object asyncState)
??????? {
??????????? return this.BeginInvoke("GetMapInfoForProvice",new object[] {
??????????????????????? pcode
?????????????????????? },callback,asyncState);
??????? }

??????? /// <remarks/>??????? public void EndGetMapInfoForProvice(System.IAsyncResult asyncResult)??????? {??????????? this.EndInvoke(asyncResult);??????? }??? }}