动态调用WebService方法

C#动态调用WebService 

object item = InvokeWebService(this._webServicesUrl, "HelloWorld", new object[] { "参数" });

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 = "ServiceBase.WebService.DynamicWebLoad";
            if (classname == null || classname == "")
            {
                classname = GetClassName(url.Replace("?wsdl", ""));
            }
            //获取服务描述语言(WSDL)
            WebClient wc = new WebClient();
            Stream stream = wc.OpenRead(url);
            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);
            Microsoft.CSharp.CSharpCodeProvider csc = new Microsoft.CSharp.CSharpCodeProvider();
            ICodeCompiler icc = csc.CreateCompiler();
            //设定编译器的参数
            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 StringBuilder();
                foreach (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);

            System.Reflection.MethodInfo mt = t.GetMethod("set_Url");
            mt.Invoke(obj, new object[] { url });
            object result;
            try
            {
                result = mi.Invoke(obj, args);
            }
            catch (Exception ex)
            {
                result = ex.InnerException;
            }
            return result;
        }

private static string GetClassName(string url)
        {
            string[] parts = url.Split('/');
            string[] pps = parts[parts.Length - 1].Split('.');
            return pps[0];
        }

以上为网上参考,谢谢