在C#中动态调用webService

 using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;

 using System.Web;
 using System.Net;
 using System.IO;
 using System.Web.Services.Description;
 using System.CodeDom;
 using Microsoft.CSharp;
 using System.CodeDom.Compiler;
 using System.Reflection;

 namespace GEB7.Core.Util
 {
     public class WSHelper
     {

         ///    /// < 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 = WSHelper.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);
             }
             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 - ].Split('.');
             return pps[];
         }
     }
 }