Usung ASP.NET MongoDB.Driver and I can't save ContextType

Question

From the course: Using MongoDB with ASP.NET MVC Demo: Displaying Rental Images

^In case you have Pluralsight At this point in the course we had attached the images to a Rental document, next we use some razor and a GetImage Action to display an image on a AttachImage.cshtml view. I believe all of that works, the image is getting attached to the document in the database.

Q: When we save the image to the database, why is the ContentType not getting added to the fs.files collection (GridFS) in the database?

NOTE: I believe the code inside the controller that is culprit is at or around:

//------------------------------------------
var options = new MongoGridFSCreateOptions
{
    Id = imageId,
    ContentType = file.ContentType
};
//------------------------------------------

Proof the image got stored using GridFS

Proof ContentType Didn't get saved

AttachImage.cshtml

@model RealEstate.Rentals.Rental
@{ ViewBag.Title = "AttachImage"; }

<h4>Attach Rental Image</h4>

@using (Html.BeginForm(null, null, FormMethod.Post, new {enctype = 
        "multipart/form-data" }))
{
    @Html.AntiForgeryToken()
<div class="form-horizontal">
    <div class="form-group">
        <label class="control-label col-md-2">Decription</label>
        <div class="col-md-10">
            @Model.Description
        </div>
    </div>

    <div class="form-group">
        @Html.Label("Image", new { @class = "control-label col-md-2" })
        <div class="col-md-10">
            <input type="file" name="file" id="file" />
        </div>
    </div>

    <div class="form-group">
        <div class="col-md-offset-2 col-md-10">
            <input type="submit" value="Attach" class="btn btn-default" />
        </div>
    </div>
</div>
}
@if (Model.HasImage())
//Show Image
{
    <img src="@Url.Action("GetImage", new { id = Model.ImageId })" />
}

AttachImage Page in Browser

RentalsController.cs

namespace RealEstate.Controllers
{
  public class RentalsController : Controller
  {
  public readonly RealEstateContext Context = new RealEstateContext();

  public ActionResult Post()
  {
        return View();
  }

[HttpPost]
public ActionResult Post(PostRental postRental)
{

    var rental = new Rental(postRental);
    Context.Rentals.Insert(rental);
    return RedirectToAction("Index");
}

public ActionResult AttachImage(string id)
{
    var rental = GetRental(id);
    return View(rental);
}

[HttpPost]
public ActionResult AttachImage(string id, HttpPostedFileBase file)
{
    var rental = GetRental(id);
    if (rental.HasImage())
    {
        DeleteImage(rental);
    }

    StoreImage(file, rental);
    return RedirectToAction("Index");
}

public ActionResult GetImage(string id)
{
    var image = Context.Database.GridFS
        .FindOneById(new ObjectId(id));
    if (image == null)
    {
        return HttpNotFound();
    }

    return File(image.OpenRead(), image.ContentType);
}


private Rental GetRental(string id)
{
    var rental = Context.Rentals.FindOneById(new ObjectId(id));
    return rental;
}

private void DeleteImage(Rental rental)
{
    //Access GrdFS & Delete By ID / Pass ImageID converted to ObjectId
    Context.Database.GridFS.DeleteById(new ObjectId(rental.ImageId));
    rental.ImageId = null;
    Context.Rentals.Save(rental);
}

private void StoreImage(HttpPostedFileBase file, Rental rental)
{
    var imageId = ObjectId.GenerateNewId();
    rental.ImageId = imageId.ToString();
    Context.Rentals.Save(rental);
    var options = new MongoGridFSCreateOptions
    {
        Id = imageId,
        ContentType = file.ContentType
    };

        Context.Database.GridFS.Upload(file.InputStream, file.FileName);
}

I don't know what else to do check, everything not only looks right from my perspective, but it's to the tee (As far as I can tell) from the Course Instruction..

Answer 1

pass the MongoGridFSCreateOptions options to the call to Upload as the last argument:

Context.Database.GridFS.Upload(file.InputStream, file.FileName, options);

Thankfully that's an easy enough fix :)