How to return a 200 HTTP Status Code from ASP.NET MVC 3 controller

Question

In your controller you'd return an HttpStatusCodeResult like this...

[HttpPost]
public ActionResult SomeMethod(...your method parameters go here...)
{
   // todo: put your processing code here

   //If not using MVC5
   return new HttpStatusCodeResult(200);

   //If using MVC5
   return new HttpStatusCodeResult(HttpStatusCode.OK);  // OK = 200
}

200 is just the normal HTTP header for a successful request. If that's all you need, just have the controller return new EmptyResult();

You can simply set the status code of the response to 200 like the following

public ActionResult SomeMethod(parameters...)
{
   //others code here
   ...      
   Response.StatusCode = 200;
   return YourObject;  
}

    [HttpPost]
    public JsonResult ContactAdd(ContactViewModel contactViewModel)
    {
        if (ModelState.IsValid)
        {
            var job = new Job { Contact = new Contact() };

            Mapper.Map(contactViewModel, job);
            Mapper.Map(contactViewModel, job.Contact);

            _db.Jobs.Add(job);

            _db.SaveChanges();

            //you do not even need this line of code,200 is the default for ASP.NET MVC as long as no exceptions were thrown
            //Response.StatusCode = (int)HttpStatusCode.OK;

            return Json(new { jobId = job.JobId });
        }
        else
        {
            Response.StatusCode = (int)HttpStatusCode.BadRequest;
            return Json(new { jobId = -1 });
        }
    }