File.Copy 中的 C# UnauthorizedAccessException

Question

我正在复习我的 C#，所以我决定编写一个程序，我可以用它轻松导入我拍摄的照片。一点背景……我用 JPEG 和 RAW 拍摄照片，然后浏览并挑选 JPEG，因为它们更小，更容易处理/预览。然后我只导入那些值得在后期制作中处理的 RAW 文件。

我想编写一个简单的程序来从一个目录复制 RAW 文件，这些文件与我在另一个目录中筛选的 JPEG 相匹配。

代码如下:

static void Main(string[] args)
    {
        Console.WriteLine("Enter the JPEG Origin Directory: "); 
        string originDirectory = @"C:\Users\Greg\Pictures\Summer 2013\Back Bay\testJPEG";

        Console.WriteLine("Enter the RAW Origin Directory: ");
        string copyDirectory = @"C:\Users\Greg\Pictures\Summer 2013\Back Bay\testRAW";

        Console.WriteLine("Enter the RAW Import Directory: ");
        string rawCopyDirectory = @"C:\Users\Greg\Pictures\Summer 2013\Back Bay\testRAWImport"; 

        char[] delimiterChars = { '_', '.' };

        List<string> filesToCopy = new List<string>();
        List<string> CopiedFiles = new List<string>(); 

        foreach (var filePath in Directory.GetFiles(originDirectory))
        {
            Console.WriteLine("Filepath: '{0}'", filePath);
            string[] words = filePath.Split(delimiterChars);

            filesToCopy.Add(words[1]); 
        }

        filesToCopy.ForEach(Console.WriteLine);

        foreach (var copyFilePath in Directory.GetFiles(copyDirectory))
        {
          string[] delimited = copyFilePath.Split(delimiterChars);     

          if (filesToCopy.Contains(delimited[1]))
          {
              Console.WriteLine("Copied: '{0}'", copyFilePath);

              string fileName = Path.GetFileName(copyFilePath);

              string sourcePath = Path.GetDirectoryName(copyFilePath);

              string targetPath = rawCopyDirectory;

              string sourceFile = System.IO.Path.Combine(sourcePath, fileName);

              string destFile = System.IO.Path.Combine(targetPath, fileName);


             System.IO.File.Copy(sourcePath, destFile, true); 

          }


        }

        Console.WriteLine("Press any key to exit.");
        Console.ReadKey();

    }

当我将所有变量写入控制台时，一切似乎都像我预期的那样工作，但是我在 Copy.File 上遇到异常，表明文件是只读的。我检查了一下，它们不是，但是文件夹本身是，尽管我尽了最大的努力，但我无法将我的测试文件夹取消标记为只读。如有任何帮助，我将不胜感激，我已将异常日志粘贴在下方。

System.UnauthorizedAccessException was unhandled
  HResult=-2147024891
  Message=Access to the path 'C:\Users\Greg\Pictures\Summer 2013\Back Bay\testRAW' is denied.
  Source=mscorlib
  StackTrace:
       at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
       at System.IO.File.InternalCopy(String sourceFileName, String destFileName, Boolean overwrite, Boolean checkHost)
       at System.IO.File.Copy(String sourceFileName, String destFileName, Boolean overwrite)
       at ConsoleApplication1.Program.Main(String[] args) in C:\Users\Greg\documents\visual studio 2010\Projects\Photo Importer\Photo Importer\photoImporter.cs:line 56
       at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
       at System.AppDomain.nExecuteAssembly(RuntimeAssembly assembly, String[] args)
       at System.Runtime.Hosting.ManifestRunner.Run(Boolean checkAptModel)
       at System.Runtime.Hosting.ManifestRunner.ExecuteAsAssembly()
       at System.Runtime.Hosting.ApplicationActivator.CreateInstance(ActivationContext activationContext, String[] activationCustomData)
       at System.Runtime.Hosting.ApplicationActivator.CreateInstance(ActivationContext activationContext)
       at System.Activator.CreateInstance(ActivationContext activationContext)
       at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssemblyDebugInZone()
       at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
       at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
       at System.Threading.ThreadHelper.ThreadStart()
  InnerException: 

Answer 1

问题可能是您无法删除或覆盖只读文件。解决方案是更改属性。

if(File.Exists(destFile))
{
    File.SetAttributes(destFile, FileAttributes.Normal);
}
File.Copy(sourcePath, destFile, true);