asp.net 通过代理服务器调用WebService

 protected void Button1_Click1(object sender, EventArgs e)
        {


            string[] args = new string[3];
            args[0] = "*";
            args[1] = "city";
            args[2] = "1=1";

            //@namespace = "System.Web.Services.WebService";


            object obj = InvokeWebService("http://220.113.1.92/RecWeb/WebInterFace.asmx", "", "WebInterFace", "GetBinaryFormatData", args);
            WebServiceSimple.ServiceReference1.WebInterFaceSoap wi = new WebServiceSimple.ServiceReference1.WebInterFaceSoapClient();

            WebServiceSimple.ServiceReference1.GetBinaryFormatDataRequest gbfdRequest = new WebServiceSimple.ServiceReference1.GetBinaryFormatDataRequest("*", "city", "1=1");

            //WebServiceSimple.WebReference.WebInterFace wi = new WebServiceSimple.WebReference.WebInterFace();
            WebServiceSimple.ServiceReference1.GetBinaryFormatDataResponse response = wi.GetBinaryFormatData(gbfdRequest);

            byte[] _byte = (byte[])obj;

            DataSet ds = RetrieveDataSet(_byte);
            this.GridView1.DataSource = ds.Tables[0];
            this.GridView1.DataBind();
        }


        /// <summary>
        /// 将二进制数据转化成dataset
        /// </summary>
        /// <param name="binaryData"></param>
        /// <returns></returns>
        public DataSet RetrieveDataSet(byte[] binaryData)
        {
            DataSet dataSetResult = null;
            MemoryStream memStream = new MemoryStream(binaryData);
            IFormatter brFormatter = new BinaryFormatter();

            object obj = brFormatter.Deserialize(memStream);
            dataSetResult = (DataSet)obj;
            return dataSetResult;
        }

        public static object InvokeWebService(string url, string @namespace, string classname, string methodname, object[] args)
        {


            try
            {
                //获取WSDL
                WebClient wc = new WebClient();


                //设置代理服务器
                WebProxy proxy = new WebProxy("192.168.102.3:80", true);
                System.Net.ServicePointManager.Expect100Continue = false;
                proxy.Credentials = new System.Net.NetworkCredential("HRconsultant", "HRproject2010", "hpc.hafele.corp");
                proxy.UseDefaultCredentials = true;
                wc.Proxy = proxy;

　　　　　　　　　 System.Net.ServicePointManager.Expect100Continue = false;
                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();
                ICodeCompiler icc = csc.CreateCompiler();

                //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));
            }
        }