I'm trying to upload an image, this is the view:

@model CrearAmigoModelo

@{
    ViewBag.Title = "Nuevo amigo";
}

<form asp-controller="Home" asp-action="Create" method="post">
    <div asp-validation-summary="All" > </div>
    <div >
        <label asp-for="Nombre" ></label>
        <div >
            <input asp-for="Nombre"  placeholder="Nombre" />
            <span asp-validation-for="Nombre" ></span>
        </div>
    </div>
    <div >
        <label asp-for="Email" ></label>
        <div >
            <input asp-for="Email"  placeholder="E-mail" />
            <span asp-validation-for="Email" ></span>
        </div>
    </div>
    <div >
        <label asp-for="Ciudad" ></label>
        <div >
            <select asp-for="Ciudad"  asp-items="Html.GetEnumSelectList<Provincia>()">
                :
                <option value="">Seleccione uno</option>
            </select>
            <span asp-validation-for="Ciudad" ></span>
        </div>
    </div>

    <div >
        <label asp-for="Foto" >-------------------------</label>
        <div >
            <div >
                <input type="file" asp-for="Foto" />
                <label > Selecciona un fichero </label>
            </div>
        </div>
    </div>

    
    <div >
        <div >
            <button type="submit" >Nuevo</button>
        </div>
    </div>


    @section Scripts{
        <script>
            $(document).ready(function() {
                $('.custom-file-input').on("change", function (){
                     var fileName=$(this).val().split("\\").pop();
                     $(this).next('.custom-file-label').html(fileName);
                });
            });
        </script>
    }
</form>

This is the method in the controller:

[HttpPost]
        public IActionResult Create(CrearAmigoModelo a)
        {
            if (ModelState.IsValid)
            {
                string guidImagen = null;
                if (a.Foto != null)
                {
                    string ficherosImagenes = Path.Combine(_env.WebRootPath, "images");
                    guidImagen = Guid.NewGuid().ToString()   a.Foto.FileName;
                    string rutaDefinitiva = Path.Combine(ficherosImagenes, guidImagen);
                    a.Foto.CopyTo(new FileStream(rutaDefinitiva, FileMode.Create));
                }
                    
                Amigo nuevoAmigo = new Amigo();
                nuevoAmigo.Nombre = a.Nombre;
                nuevoAmigo.Email = a.Email;
                nuevoAmigo.Ciudad = a.Ciudad;
                nuevoAmigo.rutaFoto = guidImagen;
                //nuevoAmigo.rutaFoto = "  ";
                amigoAlmacen.nuevo(nuevoAmigo);
                return RedirectToAction("details", new { id = nuevoAmigo.Id });
            }
            return View();

        }

The controller gets null in the field "Foto", all the others fields are passed correctly. In the view when I complete all the fields and press the button to send the form, always show the message "The Foto field is required" even when I already selected the file.

CodePudding user response：

Forms that are going to include files need to have an encoding type of multipart/form-data.

<form enctype="multipart/form-data">
</form>

Please reference the following Microsoft Docs for more information:

Uploading Files in ASP.Net Core