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public static object InvokeWebService(string url,  string methodname, object[] args)
     ÆäÖУ¬urlÊÇWeb·þÎñµÄµØÖ·£¬methodnameÊÇÒªµ÷Ó÷þÎñ·½·¨Ãû£¬argsÊÇÒªµ÷ÓÃWeb·þÎñËùÐèµÄ²ÎÊý£¬·µ»ØÖµ¾ÍÊÇweb·þÎñ·µ»ØµÄ½á¹ûÁË¡£
     ҪʵÏÖÕâÑùµÄ¹¦ÄÜ£¬ÄãÐèÒªÕ⼸¸ö·½ÃæµÄ¼¼ÄÜ£º·´Éä¡¢CodeDom¡¢±à³ÌʹÓÃC#±àÒëÆ÷¡¢WebService¡£ÔÚÁ˽âÕâЩ֪ʶºó£¬¾Í¿ÉÒÔÈÝÒ×µÄʵÏÖweb·þÎñµÄ¶¯Ì¬µ÷ÓÃÁË£º
         #region InvokeWebService
        //¶¯Ì¬µ÷ÓÃweb·þÎñ
        public static object InvokeWebService(string url, string methodname, object[] args)
         {
            return WebServiceHelper.InvokeWebService(url ,null ,methodname ,args) ;
         }
        public static object InvokeWebService(string url,  string classname, string methodname, object[] args)
         {
            string @namespace = "EnterpriseServerBase.WebService.DynamicWebCalling" ;
            if((classname == null) ||(classname == ""))
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