常用webService调用如下，知道WebService地址，引用后创建实例调用相关方法

ApplicationInterface.zb myZB = new ApplicationInterface.zb();
 myZB.Url = myRow["sAddressWebService"].ToString();
 lsReturnString = myZB.ManageFoldPageChange(xmlFoldPageChange);
 如果多个webservice 功能类似，可以考虑相同的方法名称，然后动态调用 如下

//动态调用web服务
        public static object InvokeWebService(string methodname, object[] args,string url)
        {
            //string @namespace = "EnterpriseServerBase.WebService.DynamicWebCalling";
            //string url = HttpContext.Current.Session["weburl"].ToString().Trim();
            //string url = DataOperation.GetSession("weburl").ToString().Trim();
            string classname = 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();

//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();
                CodeDomProvider provider = CodeDomProvider.CreateProvider("CSharp");
               // ICodeCompiler icc = provider.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 = provider.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(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));

return "Error:WebService调用错误！"+ex.Message;
            }
        }

object o = InvokeWebService("ManageFoldPageChange", new object[] { xmlFoldPageChange }, myRow["sAddressWebService"].ToString());

处理返回值 0，来判断调用结果