处理来自Web API的NotFound响应

Question

One of my ASP.NET Web API project has such code:

public HttpResponseMessage GetStatusById(int sid)
{
    try
    {
        var mds = TheRepository.GetStatusById(sid);
        if (mds != null)
        {
            return Request.CreateResponse(HttpStatusCode.OK, TheModelFactory.Create(mds));
        }
        else
        {
            return Request.CreateResponse(HttpStatusCode.NotFound);
        }
    }
    catch (Exception ex)
    {
        return Request.CreateResponse(HttpStatusCode.BadRequest, ex);
    }
}

In the same solution, but in another project I'm coding client (ASP.Net Website), which will read and write data through this WebAPI.

At first client should check if record already exists in database:

public async Task<ActionResult> Create([Bind(Include = "id,description")] MDS mds)
{
    if (mds == null)
    {
        return new HttpStatusCodeResult(HttpStatusCode.BadRequest, "No data given to server");
    }
    else
    {
        MDS reqMds = await _mdApiService.GetMDS ByStatus(Convert.ToInt32(mds.Id));                    

        if (reqMds == null )
        {
            await _mdApiService.CreateMDS(mds);
        }
        else
        {
            return new HttpStatusCodeResult(HttpStatusCode.Conflict, "Already exists");
        }
    }
    return View("Details", mds);
}

When I call this method, I get NotFound-Page in my browser instead of getting Response to Client (website) and parsing it. The goal is to show error from WebSite Project, not from Web API project.

What is the right way to check on client that record already exists through Web API?

Answer 1

I decided to edit my server Web API to check for duplicate entry. On the client only transmitting actions from user to API.