.net下webservice包装类

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net;
using System.CodeDom;
using Microsoft.CSharp;
using System.CodeDom.Compiler;
using System.IO;
using System.Web.Services.Description;

namespace ConsoleWSTest
{
    public class WebServiceHelper
    {
        //动态调用web服务  
        public static object InvokeWebService(string url,string methodname,object[] args)
        {
            return WebServiceHelper.InvokeWebService(url,null,methodname,args);
        }

        public static object InvokeWebService(string url,string classname,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 csc = 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 = csc.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 - 1].Split('.');

            return pps[0];
        }
    }
}