该进程无法访问文件“文件名”，因为在删除文件时它正被另一个进程使用

Question

当我尝试删除一个文件时，它说我的服务器正在使用它，所以我尝试实现using (Image img = Image.FromFile(imgFilePath))，但随后我收到了parameter is not valid 错误消息。我也尝试将图像存储在一个变量中，然后调用.Dispose()，但这也不起作用。

任何帮助将不胜感激！

删除代码（客户端）：

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);
            }
        }

我认为可能导致问题的服务器端代码：

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

你试过这种方式吗？您必须先从列表中删除图像，然后再将其删除。该错误可能是由于图像仍绑定到滑块而发生的。

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