winform中，根据已知的wsdl，怎么访问已有的webservice?
现在做一个项目，对方写webservice，我这里调用他写的这个webservice。
1、现在对方提供了他已经发布的wsdl文件，请问：我怎么根据他提供的wsdl文件来访问他写的websercie？
2、怎么实现websercie的异步调用？
开发环境上vs2005 ，winform

[解决办法]

C# code

using System;using System.Net;using System.IO;using System.CodeDom;using Microsoft.CSharp;using System.CodeDom.Compiler;using System.Web.Services.Description;using System.Web.Services.Protocols;namespace HB.Common{    /* 调用方式     *   string url = "http://www.webservicex.net/globalweather.asmx" ;     *   string[] args = new string[2] ;     *   args[0] = "Hangzhou";     *   args[1] = "China" ;     *   object result = WebServiceHelper.InvokeWebService(url ,"GetWeather" ,args) ;     *   Response.Write(result.ToString());     */    public class WebServiceHelper    {        #region InvokeWebService        /// <summary>        /// 动态调用web服务        /// </summary>        /// <param name="url">WSDL服务地址</param>        /// <param name="methodname">方法名</param>        /// <param name="args">参数</param>        /// <returns></returns>        public static object InvokeWebService(string url, string methodname, object[] args)        {            return WebServiceHelper.InvokeWebService(url, null, methodname, args);        }        /// <summary>        /// 动态调用web服务        /// </summary>        /// <param name="url">WSDL服务地址</param>        /// <param name="classname">类名</param>        /// <param name="methodname">方法名</param>        /// <param name="args">参数</param>        /// <returns></returns>        public static object InvokeWebService(string url, string classname, string methodname, object[] args)        {            string @namespace = "EnterpriseServerBase.WebService.DynamicWebCalling";            if ((classname == null) || (classname == ""))            {                classname = WebServiceHelper.GetWsClassName(url);            }            try            {                //获取WSDL                WebClient wc = new WebClient();                Stream stream = wc.OpenRead(url + "?WSDL");                ServiceDescription sd = ServiceDescription.Read(stream);                ServiceDescriptionImporter sdi = new ServiceDescriptionImporter();                sdi.AddServiceDescription(sd, "", "");                CodeNamespace cn = new CodeNamespace(@namespace);                //生成客户端代理类代码                CodeCompileUnit ccu = new CodeCompileUnit();                ccu.Namespaces.Add(cn);                sdi.Import(cn, ccu);                CSharpCodeProvider icc = new CSharpCodeProvider();                //设定编译参数                CompilerParameters cplist = new CompilerParameters();                cplist.GenerateExecutable = false;                cplist.GenerateInMemory = true;                cplist.ReferencedAssemblies.Add("System.dll");                cplist.ReferencedAssemblies.Add("System.XML.dll");                cplist.ReferencedAssemblies.Add("System.Web.Services.dll");                cplist.ReferencedAssemblies.Add("System.Data.dll");                //编译代理类                CompilerResults cr = icc.CompileAssemblyFromDom(cplist, ccu);                if (true == cr.Errors.HasErrors)                {                    System.Text.StringBuilder sb = new System.Text.StringBuilder();                    foreach (System.CodeDom.Compiler.CompilerError ce in cr.Errors)                    {                        sb.Append(ce.ToString());                        sb.Append(System.Environment.NewLine);                    }                    throw new Exception(sb.ToString());                }                //生成代理实例，并调用方法                System.Reflection.Assembly assembly = cr.CompiledAssembly;                Type t = assembly.GetType(@namespace + "." + classname, true, true);                object obj = Activator.CreateInstance(t);                System.Reflection.MethodInfo mi = t.GetMethod(methodname);                return mi.Invoke(obj, args);                /*                PropertyInfo propertyInfo = type.GetProperty(propertyname);                return propertyInfo.GetValue(obj, null);                */            }            catch (Exception ex)            {                throw new Exception(ex.InnerException.Message, new Exception(ex.InnerException.StackTrace));            }        }        private static string GetWsClassName(string wsUrl)        {            string[] parts = wsUrl.Split('/');            string[] pps = parts[parts.Length - 1].Split('.');            return pps[0];        }        #endregion    }} 
 
[解决办法]
楼上的这种方法有问题，如果对方的webservice里引用了自己的dll，调用就会出错。
有了wsdl了，肯定时可以构造web引用的，然后在程序模块里直接引用就可以了
[解决办法]
up
[解决办法]
在web层调用你的DLL？然后你在调用web层？
循环调用？

[解决办法]
引用
[解决办法]

[解决办法]

[解决办法]
using System;
using System.Net;
using System.IO;
using System.CodeDom;
using Microsoft.CSharp;
using System.CodeDom.Compiler;
using System.Web.Services.Description;
using System.Web.Services.Protocols;

namespace HB.Common
{
   /* 调用方式
    *   string url = "http://www.webservicex.net/globalweather.asmx" ;
    *   string[] args = new string[2] ;
    *   args[0] = "Hangzhou";
    *   args[1] = "China" ;
    *   object result = WebServiceHelper.InvokeWebService(url ,"GetWeather" ,args) ;
    *   Response.Write(result.ToString());
    */
   public class WebServiceHelper
   {
       #region InvokeWebService
       /// <summary>
       /// 动态调用web服务
       /// </summary>
       /// <param name="url">WSDL服务地址</param>
       /// <param name="methodname">方法名</param>
       /// <param name="args">参数</param>
       /// <returns></returns>
       public static object InvokeWebService(string url, string methodname, object[] args)
       {
           return WebServiceHelper.InvokeWebService(url, null, methodname, args);
       }

       /// <summary>
       /// 动态调用web服务
       /// </summary>
       /// <param name="url">WSDL服务地址</param>
       /// <param name="classname">类名</param>
       /// <param name="methodname">方法名</param>
       /// <param name="args">参数</param>
       /// <returns></returns>
       public static object InvokeWebService(string url, string classname, string methodname, object[] args)
       {
           string @namespace = "EnterpriseServerBase.WebService.DynamicWebCalling";
           if ((classname == null) || (classname == ""))
           {
               classname = WebServiceHelper.GetWsClassName(url);
           }

           try
           {
               //获取WSDL
               WebClient wc = new WebClient();
               Stream stream = wc.OpenRead(url + "?WSDL");
               ServiceDescription sd = ServiceDescription.Read(stream);
               ServiceDescriptionImporter sdi = new ServiceDescriptionImporter();
               sdi.AddServiceDescription(sd, "", "");
               CodeNamespace cn = new CodeNamespace(@namespace);

               //生成客户端代理类代码
               CodeCompileUnit ccu = new CodeCompileUnit();
               ccu.Namespaces.Add(cn);
               sdi.Import(cn, ccu);
               CSharpCodeProvider icc = new CSharpCodeProvider();

               //设定编译参数
               CompilerParameters cplist = new CompilerParameters();
               cplist.GenerateExecutable = false;
               cplist.GenerateInMemory = true;
               cplist.ReferencedAssemblies.Add("System.dll"); 
 
               cplist.ReferencedAssemblies.Add("System.XML.dll");
               cplist.ReferencedAssemblies.Add("System.Web.Services.dll");
               cplist.ReferencedAssemblies.Add("System.Data.dll");

               //编译代理类
               CompilerResults cr = icc.CompileAssemblyFromDom(cplist, ccu);
               if (true == cr.Errors.HasErrors)
               {
                   System.Text.StringBuilder sb = new System.Text.StringBuilder();
                   foreach (System.CodeDom.Compiler.CompilerError ce in cr.Errors)
                   {
                       sb.Append(ce.ToString());
                       sb.Append(System.Environment.NewLine);
                   }
                   throw new Exception(sb.ToString());
               }

               //生成代理实例，并调用方法
               System.Reflection.Assembly assembly = cr.CompiledAssembly;
               Type t = assembly.GetType(@namespace + "." + classname, true, true);
               object obj = Activator.CreateInstance(t);
               System.Reflection.MethodInfo mi = t.GetMethod(methodname);

               return mi.Invoke(obj, args);

               /*
               PropertyInfo propertyInfo = type.GetProperty(propertyname);
               return propertyInfo.GetValue(obj, null);
               */
           }
           catch (Exception ex)
           {
               throw new Exception(ex.InnerException.Message, new Exception(ex.InnerException.StackTrace));
           }
       }

       private static string GetWsClassName(string wsUrl)
       {
           string[] parts = wsUrl.Split('/');
           string[] pps = parts[parts.Length - 1].Split('.');

           return pps[0];
       }
       #endregion
   }
}

[解决办法]
学学.net根据wsdl自动生成的webservice代理类
[解决办法]
VS中有一个工具叫做WSDL.EXE


到MSDN中查找WSDL.EXE,学学这个怎么用就行了