客户提供一个web serivice的url, 客户强调里面提供的方法中有部分我们可以访问，有部分我们访问不了。

我曾经尝试用通过在VS.NET里add web service reference的方法进行编程，但是没有添加成功，提示“Unable to download following files from http://......?wsdl. Do you want to skip these files and continue?”(其中http://......为客户提供的url)，我选择Yes跳过这个错误，但是访问不了引进的类。

后来我尝试用动态访问的方法去访问，结果并没有访问成功，得到“Unable to connect to the remote server”的错误提示，如下是我在网上搜的代码，并应用到我的代码里，请问大家，下面的代码有问题，还是这种方法本来就不是解决我问题的方法，大家有不有什么别的建议？在此先谢谢大家！

        public static object InvokeWebService(string url, string methodname, object[] args)
        {
            try
            {
                string @namespace = "WebService.DynamicWebCalling";
                string[] parts = url.Split('/');
                string[] pps = parts[parts.Length - 1].Split('.');
                string classname = pps[0];

                System.Net.WebClient wc = new System.Net.WebClient();
                System.IO.Stream stream = wc.OpenRead(url + "?WSDL");
                System.Web.Services.Description.ServiceDescription sd = System.Web.Services.Description.ServiceDescription.Read(stream);
                System.Web.Services.Description.ServiceDescriptionImporter sdi = new System.Web.Services.Description.ServiceDescriptionImporter();
                sdi.AddServiceDescription(sd, "", "");
                System.CodeDom.CodeNamespace cn = new System.CodeDom.CodeNamespace(@namespace);
                System.CodeDom.CodeCompileUnit ccu = new System.CodeDom.CodeCompileUnit();
                ccu.Namespaces.Add(cn);
                sdi.Import(cn, ccu);

                Microsoft.CSharp.CSharpCodeProvider csc = new Microsoft.CSharp.CSharpCodeProvider();
                System.CodeDom.Compiler.ICodeCompiler icc = csc.CreateCompiler();

                System.CodeDom.Compiler.CompilerParameters cplist = new System.CodeDom.Compiler.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");

                System.CodeDom.Compiler.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());
                }
                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 ex;
            }
        }