C# Ajax can't get data from controller response

Question

I have a question about ajax. I have URL : http://localhost:57295/api/Formgetstatus/id=admin&password=test123!&orderNo=000016-150000012

When i click this URL then browser display information responsed :

<FormGetStatusRespond xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://schemas.datacontract.org/2004/07/FormService.RestApi">
<ResultInfo>
<ErrorInfo i:nil="true"/>
<ErrorType>None</ErrorType>
<Status>Ok</Status>
</ResultInfo>
<Status>OK</Status>
<StatusCode>1</StatusCode>
</FormGetStatusRespond>

And this is controller response:

public FormGetStatusRespond GetStatus(string id, string password, string orderNo)
        {
            var respond = new FormGetStatusRespond();
            var resultInfor = new ResultInfo();
            var errorInfor = new ErrorInfo();

            if(!this.AuthenticateForUser(id, password))
            {
                // Result Infor
                resultInfor.Status = WebApiStatus.Error;
                resultInfor.ErrorType = WebApiErrorType.AuthenticationError;

                // Error Infor
                errorInfor.Messsage = "abc";

                resultInfor.ErrorInfo = errorInfor;

                respond.ResultInfo = resultInfor;

                return respond;
            }

            var orderDal = new OrderRepository();
            var orderModel = orderDal.FindByOrderNo(orderNo);

            if(orderModel != null)
            {
                // Result Infor
                resultInfor.Status = WebApiStatus.Ok;
                resultInfor.ErrorType = WebApiErrorType.None;
                respond.ResultInfo = resultInfor;
                respond.Status = this.GetOrderStatus(orderModel.OrderStatus);
                respond.StatusCode = ((int)orderModel.OrderStatus).ToString();
            }
            else
            {
                // Result Infor
                resultInfor.Status = WebApiStatus.Error;
                resultInfor.ErrorType = WebApiErrorType.ApplicationError;

                // Error Infor
                errorInfor.Messsage = "abc：" + orderNo + "abc";

                resultInfor.ErrorInfo = errorInfor;

                respond.ResultInfo = resultInfor;

                return respond;
            }

            return respond;
        }

I use ajax to get data XML :

$.ajax({
        type: 'GET',
        url: "http://localhost:57295/api/Formgetstatus/id=admin&password=test123!&orderNo=000016-150000012",
        dataType: 'xml',
        success: function (data) {
          alert('b');
        },
        error: function (error) {
          alert('a');
        }
      });

I don't know why i can't get data from ajax. Please help me! Thanks everyone!

Answer 1

The return value from your controller action should be something that derives from ActionResult. Try converting your object to an xml string then returning

return this.Content(xmlString, "text/xml");

so the response type is set to xml