該進程無法訪問文件“文件名”，因為在刪除文件時它正被另一個進程使用

Question

當我嘗試刪除文件時，它說我的服務器正在使用它，所以我嘗試實現using (Image img = Image.FromFile(imgFilePath))但后來我得到parameter is not valid錯誤消息。 我也嘗試將圖像存儲在一個變量中，然后調用.Dispose()但這也不起作用。

任何幫助將不勝感激！

刪除代碼（客戶端）：

private void pbDelete_Click(object sender, EventArgs e)
        {
            if (imgSliderCapture.Images.Count > 0)
            {
                int currentImageIndex = imgSliderCapture.CurrentImageIndex;
                m_DispenseOrderPresenter.DeleteCapturedRxImage(currentImageIndex);
                imgSliderCapture.Images.RemoveAt(currentImageIndex);

                if (imgSliderCapture.Images.Count <= 0)
                {
                    pbCamera.Image = global::KeyCentrix.RxKey.UI.Properties.Resources.white_camera;
                    pbCamera.BackColor = Color.DarkGray;
                    imgSliderCapture.ImageList = null;
                    pbCamera.Padding = new Padding(38, 15, 40, 35);
                    pbCamera.Size = new Size(169, 123);
                    pbDelete.Visible = false;
                }
            }
        }

public void DeleteCapturedRxImage(int currentImageIndex)
        {
            if (File.Exists(m_PathImagePairs[currentImageIndex].Key))
            {
                File.Delete(m_PathImagePairs[currentImageIndex].Key);
            }
        }

我認為可能導致問題的服務器端代碼：

public List<KeyValuePair<string, Image>> GetCapturedRxImages(string rxId)
        {
            try
            {                 
                string[] imgFilePaths = GetCapturedRxImagesFilePaths(rxId);
                List<KeyValuePair<string, Image>> images = new List<KeyValuePair<string, Image>>();
                List<byte[]> byteArrays = new List<byte[]>();

                if (imgFilePaths == null || imgFilePaths.Length < 1)
                {
                    return null;
                }

                foreach(string imgFilePath in imgFilePaths)
                {
                    images.Add(new KeyValuePair<string, Image>(imgFilePath, Image.FromFile(imgFilePath)));
                }
                return images;
            }
            catch (Exception ex)
            {
                LogFactory.LogEvent(typeof(RxDirSvc), LogLevel.Error, String.Format("Exception in {0}", MethodInfo.GetCurrentMethod()), ex);
                return null;
            }
        }

        /// <summary>
        /// Gets the user captured drug's image file name and path
        /// </summary>
        /// <param name="identifier"></param>
        /// <returns></returns>
        public string[] GetCapturedRxImagesFilePaths(string rxId)
        {
            try
            {
                List<string> filesFound = new List<string>();
                string pathFolder = Directory.GetParent(System.Windows.Forms.Application.StartupPath) + @"\images\RxCapturedImages\" + rxId;
                
                filesFound.AddRange(Directory.GetFiles(pathFolder, "*.jpeg"));
                return filesFound.ToArray();
            }
            catch (Exception ex)
            {
                LogFactory.LogEvent(typeof(RxDirSvc), LogLevel.Error, String.Format("Exception in {0}", MethodInfo.GetCurrentMethod()), ex);
                return null;
            }
        }

Answer 1

你試過這種方法嗎？ 您必須先從列表中刪除圖像，然后再將其刪除。 由於圖像仍綁定到 slider，因此可能發生錯誤。

imgSliderCapture.Images.RemoveAt(currentImageIndex);
m_DispenseOrderPresenter.DeleteCapturedRxImage(currentImageIndex);