publicstaticobject InvokeWebService(string url,  string methodname, object[] args)

         #region InvokeWebService
        //动态调用web服务
        publicstaticobject InvokeWebService(string url, string methodname, object[] args)
         {
            return WebServiceHelper.InvokeWebService(url ,null ,methodname ,args) ;
         }

publicstaticobject InvokeWebService(string url,  string classname, string methodname, object[] args)
         {
            string @namespace ="EnterpriseServerBase.WebService.DynamicWebCalling" ;
            if((classname ==null) ||(classname ==""))
             {
                 classname = WebServiceHelper.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(@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);
                     }
                    thrownew 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)
             {
                thrownew Exception(ex.InnerException.Message,new Exception(ex.InnerException.StackTrace));
             }
         }

privatestaticstring GetWsClassName(string wsUrl)
         {
            string[] parts = wsUrl.Split('/') ;
            string[] pps   = parts[parts.Length-1].Split('.') ;

return pps[0] ;
         }
        #endregion

             string url ="http://www.webservicex.net/globalweather.asmx" ;
            string[] args =newstring[2] ;
             args[0] =this.textBox_CityName.Text ;
             args[1] ="China" ;
            object result = WebServiceHelper.InvokeWebService(url ,"GetWeather" ,args) ;
            this.label_Result.Text = result.ToString() ;