【解決方法】ASP.NET API での写真のアップロードが機能しません…助けてください

私はこの問題にほぼ 3 日を費やしました。 この段階を通過できないようで、そのまま放置されました。コードをツイクしてリウィークしたので、正しくやっていると思います。助けてください。 私は MVC API を使用していますが、問題は写真のアップロード、または部屋の詳細の投稿です。

できるだけ早くこの解決策が必要です。 私を助けてください

私が試したこと：

ルームモデル。

public class Room
{
    public int Id { get; set; }

    [Required]
    [StringLength(20)]
    [Display(Name = "Room Number:")]
    public string RoomNumber { get; set; }

    [Display(Name = "Price:")]
    [DataType(DataType.Currency)]
    public decimal Rate { get; set; }

    [Display(Name = "Select Room Type:")]
    public int RoomTypeId { get; set; }

    public ICollection<RoomType> RoomType { get; set; }

    [Display(Name = "Select Booking Status:")]
    public int BookingStatusId { get; set; }

    public ICollection<BookingStatus> BookingStatus { get; set; }


    [StringLength(5000)]
    [DataType(DataType.MultilineText)]
    [Display(Name = "Description of Room:")]
    public string? Description { get; set; }


    public ICollection<Reservation> Reservations { get; set; }
    [NotMapped]
    public IFormFile CoverPhoto { get; set; }
    public string CoverPhotoURL { get; set; }
    [NotMapped]
    public IFormFileCollection GalleryFiles { get; set; }
    public List<RoomImage> Roomimages { get; set; }
    public bool isFavourite { get; set; }
    public bool IsAvailable { get; set; } = true;
}

部屋のイメージモデル

public class RoomImage
{
    public int Id { get; set; }
    public int RoomId { get; set; }
    public string Imageurl { get; set; }
    public Room Room { get; set; }
    //after migration uncomment the above
}

部屋モデルを投稿するための MVC Web コントローラー

[HttpPost]
public IActionResult AddNew([FromForm] Room model)
{
    if (model != null)
    {
        // Access properties
        string roomnumber = model.RoomNumber;
        decimal rate = model.Rate;
        int roomtypeid = model.RoomTypeId;
        int statusid = model.BookingStatusId;
        string description = model.Description;
        bool isfavourite = model.isFavourite;
        bool isavailable = model.IsAvailable;

        // Create an instance of ImageData and set its properties
        var imageData = new Room
        {
            RoomNumber = roomnumber,
            Rate = rate,
            RoomTypeId = roomtypeid,
            BookingStatusId = statusid,
            Description = description,
            isFavourite = isfavourite,
            IsAvailable = isavailable,

        };

        // Process the single file (IFormFile)
        if (model.CoverPhoto != null)
        {
            using (var memoryStream = new MemoryStream())
            {
                model.CoverPhoto.CopyTo(memoryStream);
                byte[] imageBytes = memoryStream.ToArray();
                // Process the single file data (imageBytes)
                // For example, you can convert it to Base64 if required:
                string base64String = Convert.ToBase64String(imageBytes);

                // Set the ImageBase64 property in the imageData
                imageData.CoverPhotoURL = model.CoverPhoto.FileName;
            }
        }

        // Process the multiple files (IFormFileCollection)
        if (model.GalleryFiles != null && model.GalleryFiles.Count > 0)
        {
            var fileDataList = new List<RoomImage>();

            foreach (var file in model.GalleryFiles)
            {
                if (file != null && file.Length > 0)
                {
                    using (var memoryStream = new MemoryStream())
                    {
                        file.CopyTo(memoryStream);
                        byte[] fileBytes = memoryStream.ToArray();

                        // Process each file data (fileBytes)
                        // For example, you can save it, convert it to Base64, or perform other processing.

                        // Access other information about the file
                        string fileName = file.FileName;
                        long fileSize = file.Length;

                        // Create a FileData object to hold file information
                        var fileData = new RoomImage
                        {
                            Imageurl = fileName
                        };

                        // Add the file data to the list
                        fileDataList.Add(fileData);
                    }
                }
            }

            // Add the list of file data to the imageData
            imageData.Roomimages = fileDataList;
        }

        // Serialize the entire imageData to a JSON string
        string jsonModel = JsonConvert.SerializeObject(imageData);

        StringContent content = new StringContent(jsonModel, Encoding.UTF8, "application/json");
        //httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("bearer", contxt.HttpContext.Session.GetString("accessToken"));
        HttpResponseMessage response = _httpclient.PostAsync(_httpclient.BaseAddress + "Rooms/addnewbook", content).Result;
        if (response.IsSuccessStatusCode)
        {
            TempData["suceessMessae"] = "New Room record created successfully.";
            return RedirectToAction("Index");
        }
        return View();
    }

    return BadRequest("No valid data was received.");
}

これは Room Post リクエストの MVC API です。しかし、ここまでは到達しません。 そこにブレークポイントがあるため、APIコードに到達することはありません

[HttpPost("addnewbook")]
public async Task<IActionResult> AddNewBookz([FromBody] Room room)
{
    //if (ModelState.IsValid)
   // {
        if (room.CoverPhoto != null)
        {
            string folder = "rm_images/cover/";
            room.CoverPhotoURL = await uploadimage(folder, room.CoverPhoto);
        }

        if (room.GalleryFiles != null)
        {
            string folder = "rm_images/rooms/";

            room.Roomimages = new List<RoomImage>();

            foreach (var file in room.GalleryFiles)
            {
                var gallery = new RoomImage()
                {
                    Imageurl = await uploadimage(folder, file)
                };
                room.Roomimages.Add(gallery);
            }
        }
        _context.Update(room);
        _context.SaveChanges();
   // }

    return Ok();
}

バツ