Ext.Net.Field.RaiseAjaxPostBackEvent C# (CSharp) Method

        public void RaiseAjaxPostBackEvent(string eventArgument, ParameterCollection extraParams)
        {
            bool success = true;
            string message = null;
            object value = null;

            try
            {
                if (eventArgument.IsEmpty())
                {
                    throw new ArgumentNullException("eventArgument");
                }

                XmlNode xmlData = this.SubmitConfig;
                string data = null;

                if (xmlData != null)
                {
                    XmlNode serviceNode = xmlData.SelectSingleNode("config/serviceParams");

                    if (serviceNode != null)
                    {
                        data = serviceNode.InnerText;
                    }
                }

                switch (eventArgument)
                {
                    case "remotevalidation":
                        RemoteValidationEventArgs e = new RemoteValidationEventArgs(data, extraParams);
                        this.RemoteValidation.OnValidation(e);                        
                        success = e.Success;
                        message = e.ErrorMessage;
                        if (e.ValueIsChanged)
                        {
                            value = e.Value;
                        }
                        break;
                }
            }
            catch (Exception ex)
            {
                success = false;
                message = this.IsDebugging ? ex.ToString() : ex.Message;

                if (this.ResourceManager.RethrowAjaxExceptions)
                {
                    throw;
                }
            }

            ResourceManager.ServiceResponse = new { valid=success, message, value };
        }