private static ServiceReferenceDLL.ServiceSoapClient Instacia()
{
//if (_objServicio == null)
//{
_objServicio = new ServiceReferenceDLL.ServiceSoapClient();
_objServicio.Login(System.Configuration.ConfigurationManager.AppSettings["ws_dll_usu"], System.Configuration.ConfigurationManager.AppSettings["ws_dll_psw"]);
//}
return(_objServicio);
}