How to upload image name to database using ASP.NET MVC?

I'm trying to do a movie gallery in MVC, and I have the following algorithm:

Save image to server in a specific folder. Path.Combine(Server.MapPath("~/Images"), Path.GetFileName(archivo.FileName));
And Save image name to database. (not the full path, just like Hello.jpg).
In the View just show them by typing <img src="/Images/@MovieGallery.Imagen"/> using a foreach loop.

(Please correct me if my algorithm is not good)

And this is my code:

Controller

        [HttpPost]
    public ActionResult Peliculas_Agregar(pelicula pelis)  {

        string path="";
        HttpPostedFileBase archivo = Request.Files["Imagen"]; // @name= file, capturo el name


            if (ModelState.IsValid) { // Validar si son validos los campos segun DBSET
                    try
                    {

                        if (archivo != null && archivo.ContentLength > 0) { //El nombre del archivo debe ser mayor que 0 y no debe ser nulo
                            try
                            {
                                path = Path.Combine(Server.MapPath("~/Images"), Path.GetFileName(archivo.FileName));
                                archivo.SaveAs(path);

                    }
                    catch (Exception ex) {
                                ViewBag.ErrorArchivo = ex;
                            }
                        }

                        Cine.peliculas.Add(pelis);
                        Cine.SaveChanges();
                    }
                catch (Exception ex){
                        ViewBag.Error = ex;
                    }

            }
        return View(pelis);
    }

Model (Generated by Entity Framework)

 public int id_peli { get; set; }
    public string titulo { get; set; }
    public string director { get; set; }
    public string cast { get; set; }
    public string descripcion { get; set; }
    public Nullable<int> duracion { get; set; }
    public string categoria { get; set; }
    [DataType(DataType.Upload)]
    [Display(Name = "Cargar imagen")]
    //[Required(ErrorMessage = "Por favor carga una imagen")]
    public string imagen { get; set; } // here is where i want to save files name, not the path.

View

@using (Html.BeginForm("Peliculas_Agregar", "Admin", FormMethod.Post, new { enctype = "multipart/form-data" }))
{
    @Html.AntiForgeryToken()
    <div class="Formas">
        <div class="form-group">
            @Html.LabelFor(m => m.titulo, new { htmlAttributes = new { @for = "exampleTittle" } })
            @Html.EditorFor(m => m.titulo, new { htmlAttributes = new { @placeholder = "Título", @class = "form-control"} })
        </div>
        <div class="form-group">
            <input type="file" name="Imagen" />
        </div>
    </div>
    <input type="submit" value="Agregar Película" class="btn btn-outline-primary" />
}

My code works OK, but the main problem that I am facing is that I can't or I don't know how to save the image name to database because I'm not getting the string name of the image that is coming into the parameter. I'm just getting a string or type called like System.Web.HttpPostedFileWrapper : System.Web.HttpPostedFileWrapper

I think this is because I am using HttpPostedFileBase to save the image into the server but I can't edit this and save just the image name into the server. Can't do both things. How could I solve this?

Solution

Following the two liked answers we use a View Model to post the form and file. Then we map the VM fields to the Entity's fields before performing the database actions.

Entity Model

public class Movie
{
    public string Title { get; set; }
    public string FileName { get; set; }
}

Create a View Model to capture your form values

public class MovieVM
{
    public string Title { get; set; }

    [Display(Name = "Upload Image")]
    public HttpPostedFileBase Image { get; set; }
}

The action accepts the MovieVM instead of the Entity

[HttpPost]
public ActionResult UploadMovie(MovieVM model)
{
    if (ModelState.IsValid)
    {
        // save file
        // ...

        // Map to Entity to save to db
        Movie movie = new Movie
        {
            Title = model.Title,
            FileName = model.Image.FileName
        };

        db.Movies.Add(movie);
        db.SaveChanges();

        return RedirectToAction("Success");
    }
    return View(model);
}