动态调用Webservice[4]

         /// </code>

         /// </example>

         private object InvokeWebservice(string url, string @namespace, string classname, string methodname, object[] args)

         {

              try

              {

                   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();