如何在C#中删除包含只读文件的目录？

Question

如何在C#中删除包含只读文件的目录？

c#directoryreadonlydelete-directory

62

我需要删除一个包含只读文件的目录。哪种方法更好？

使用DirectoryInfo.Delete()，还是
ManagementObject.InvokeMethod("Delete")？

使用DirectoryInfo.Delete()时，我必须手动关闭每个文件的只读属性，但ManagementObject.InvokeMethod("Delete")似乎不需要这样做。是否存在一种更优选的情况来选择其中的一种方法？

示例代码（test.txt为只读文件）。

第一种方式：

DirectoryInfo dir = new DirectoryInfo(@"C:\Users\David\Desktop\");
dir.CreateSubdirectory("Test");

DirectoryInfo test = new DirectoryInfo(@"C:\Users\David\Desktop\Test\");
File.Copy(@"C:\Users\David\Desktop\test.txt", @"C:\Users\David\Desktop\Test\test.txt");
File.SetAttributes(@"C:\Users\David\Desktop\Test\test.txt", FileAttributes.Archive);
test.Delete(true);

第二种方法：

DirectoryInfo dir = new DirectoryInfo(@"C:\Users\David\Desktop\");
dir.CreateSubdirectory("Test");

DirectoryInfo test = new DirectoryInfo(@"C:\Users\David\Desktop\Test\");
File.Copy(@"C:\Users\David\Desktop\test.txt", @"C:\Users\David\Desktop\Test\test.txt");

string folder = @"C:\Users\David\Desktop\Test";
string dirObject = "Win32_Directory.Name='" + folder + "'";
using (ManagementObject managementObject = new ManagementObject(dirObject))
{
    managementObject.Get();
    ManagementBaseObject outParams = managementObject.InvokeMethod("Delete", null,
    null);
    // ReturnValue should be 0, else failure
    if (Convert.ToInt32(outParams.Properties["ReturnValue"].Value) != 0)
    {
    }
}

- David Hodgson

11个回答

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- charles young · Answer 1

为了跟进Vitaliy Ulantikov的解决方案，我补充了一个重命名/移动文件夹的方法：

  public static void renameFolder(String sourcePath, String targetPath) {
     try
     {
        if (System.IO.Directory.Exists(targetPath))
           DeleteFileSystemInfo(new DirectoryInfo(targetPath));
        System.IO.Directory.Move(sourcePath, targetPath);
     }
     catch (Exception ex)
     {
        Console.WriteLine("renameFolder: " + sourcePath + " " + targetPath + " " + ex.Message);
        throw ex;
     }
  }

  private static void DeleteFileSystemInfo(FileSystemInfo fsi) {
     fsi.Attributes = FileAttributes.Normal;
     var di = fsi as DirectoryInfo;

     if (di != null)
     {
        foreach (var dirInfo in di.GetFileSystemInfos())
        {
           DeleteFileSystemInfo(dirInfo);
        }
     }

     fsi.Delete();
  }