c# 动态调用WebService

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

namespace ConsoleApplication2
{
    class Program
    {
        static void Main(string[] args)
        {
        }
        public static class WebServiceHelpera
        {
            public static object InvokeWebService(string url, string methodname, object[] args)
            {
                return InvokeWebService(url, null, methodname, args);
            }
            public static object InvokeWebService(string url, string classname, string methodname, object[] args)
            {
                string @namespace = "ConsoleApplication2";
                if (classname == null || classname =="")
                {
                    classname = WebServiceHelper.GetClassName(url);
                }
                WebClient wc = new WebClient();
                Stream stream = wc.OpenRead(url + "?WSDL");
                ServiceDescription sd = ServiceDescription.Read(stream);
                ServiceDescriptionImporter importer = new ServiceDescriptionImporter();
                importer.AddServiceDescription(sd, "", "");
                CodeNamespace cn = new CodeNamespace(@namespace);
                CodeCompileUnit ccu = new CodeCompileUnit();
                ccu.Namespaces.Add(cn);
                importer.Import(cn, ccu);
                CSharpCodeProvider cSharpCodeProvider = new CSharpCodeProvider();
                CompilerParameters parameters = new CompilerParameters();
                parameters.ReferencedAssemblies.Add("System.dll");
                parameters.ReferencedAssemblies.Add("System.XML.dll");
                parameters.ReferencedAssemblies.Add("System.Web.Services.dll");
                parameters.ReferencedAssemblies.Add("System.Data.dll");
                parameters.GenerateExecutable = false;
                parameters.GenerateInMemory = true;
                CompilerResults results = cSharpCodeProvider.CompileAssemblyFromDom(parameters, ccu);
                if (results.Errors.Count>0)
                {
                    System.Text.StringBuilder sb = new StringBuilder();
                    foreach(CompilerError ce in results.Errors)
                    {
                        sb.Append(ce.ToString());
                        sb.Append(System.Environment.NewLine);
                    }
                    throw new System.Exception(sb.ToString());
                }
               
                Assembly assembly = results.CompiledAssembly;
                Type AType = assembly.GetType(@namespace + "." + classname, true, true);
                object obj =  Activator.CreateInstance(AType);
                MethodInfo method = AType.GetMethod(methodname);
                return method.Invoke(obj, args);
                
                


            }
            private static string GetClassName(string url)
            {
                //假如URL为"http://localhost/InvokeService/Service1.asmx"
                //最终的返回值为 Service1
                string[] parts = url.Split('/');
                string[] pps = parts[parts.Length - 1].Split('.');
                return pps[0];
            }
        }
    }
}