Return the List items from C# MVC Controller

Question

So I have this code and it should return the list of items but I can't get it to work. I know there is a mismatch between HttpResponseMessage and List<string> but I am not able to convert it to return.

I know that it's because of the HttpResponseMessage type and list don't match but I don't know how to convert it

namespace NovaWebApi.Controllers
{
    public class TermsController : WebApiBase
    {
        [HttpGet]
        public HttpResponseMessage GetTermsUrl()
        {
            List<string> terms = new List<string>();
            terms.Add("https://www.nbg.gov.ge/index.php?m=2");
            terms.Add("https://www.fms.gov.ge/");

            return terms;
        }
    }

}

The message it right there in that picture telling you what is wrong. — Mark Schultheiss
– Mark Schultheiss, Commented Jul 28, 2020 at 11:43
return type should be of HttpResponseMessage type. stackoverflow.com/questions/12240713/… — Iti Tyagi
– Iti Tyagi, Commented Jul 28, 2020 at 11:43
If none of these answers provide a solution you can accept as an answer for you please edit your question to indicate why your requirement is not met by them with additional details. — Mark Schultheiss
– Mark Schultheiss, Commented Jul 29, 2020 at 13:01

MrElectrQ · Accepted Answer · 2020-07-28 11:49:22Z

2

Your HttpGet method returns HttpResponseMessage.Try this one:

[HttpGet]

    public List<string> GetTermsUrl()
    {
        List<string> terms = new List<string>();
        terms.Add("https://www.nbg.gov.ge/index.php?m=2");
        terms.Add("https://www.fms.gov.ge/");

        return terms;
    }

answered Jul 28, 2020 at 11:49

MrElectrQ

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1 Comment

Giorgi Krialashvili Over a year ago

Yeah, I did that and it worked just fine sorry for the late reply. I haven't tried other ones this one worked for me.

Süleyman Sümertaş · Accepted Answer · 2020-07-28 11:37:33Z

1

You are trying to return List<string> as HttpResponseMessage which is not possible.Try this:

public class TermsController : Controller // this part to return Ok() without error.

Then:

return Ok(terms);

edited Jul 28, 2020 at 11:37

answered Jul 28, 2020 at 11:30

Süleyman Sümertaş

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5 Comments

Giorgi Krialashvili Over a year ago

I've tried it but "name Ok doesn't exist in the current contexts"

Süleyman Sümertaş Over a year ago

Any intellisense suggestions?

Giorgi Krialashvili Over a year ago

Just to generate a new Ok method

Giorgi Krialashvili Over a year ago

It did not help sorry. It messed up [httpget] and I changed it to public class TermsController : WebApiBase that we use in different controllers but I still get an error

Süleyman Sümertaş Over a year ago

Not WebApiBase, you should use Controller to inherit.

Mark Schultheiss · Accepted Answer · 2020-07-28 11:58:58Z

1

Since you indicate you wish to return HttpResponseMessage type, you have to create one that includes your list.

Web API will create a serialized version in the response body using a formatter for the model, in this case your list; writing the serialized model into the response body.

[HttpGet]
public HttpResponseMessage GetTermsUrl()
{
     // Get a list of products from a database.
     List<string> terms = new List<string>();
     terms.Add("https://www.nbg.gov.ge/index.php?m=2");
     terms.Add("https://www.fms.gov.ge/");
     // Write the list to the response body.
     HttpResponseMessage response = Request.CreateResponse(HttpStatusCode.OK, terms);
     return response;
)

answered Jul 28, 2020 at 11:58

Mark Schultheiss

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