在C＃中设置文件权限＃

Question

我想在C＃中设置文件的权限为“无法删除”，只能读取。但我不知道该怎么做。你可以帮我吗 ？

Answer 1

看看File.SetAttributes()。网上有很多关于如何使用它的例子。

从MSDN页摘自：

FileAttributes attributes = File.GetAttributes(path); 

     if ((attributes & FileAttributes.Hidden) == FileAttributes.Hidden) 
     { 
      // Show the file. 
      attributes = RemoveAttribute(attributes, FileAttributes.Hidden); 
      File.SetAttributes(path, attributes); 
      Console.WriteLine("The {0} file is no longer hidden.", path); 
     } 
     else 
     { 
      // Hide the file. 
      File.SetAttributes(path, File.GetAttributes(path) | FileAttributes.Hidden); 
      Console.WriteLine("The {0} file is now hidden.", path); 
     } 

Answer 2

你忘了在方法的removeAttribute复制，这就是：

private static FileAttributes RemoveAttribute(FileAttributes attributes, FileAttributes attributesToRemove) 
    { 
     return attributes & ~attributesToRemove; 
    } 

Answer 3

这是关于属性（见JB的答案）或权限，即读/写访问等？在后一种情况下，请参见File.SetAccessControl。

从MSDN：

// Get a FileSecurity object that represents the 
// current security settings. 
FileSecurity fSecurity = File.GetAccessControl(fileName); 

// Add the FileSystemAccessRule to the security settings. 
fSecurity.AddAccessRule(new FileSystemAccessRule(account, rights, controlType)); 

// Set the new access settings. 
File.SetAccessControl(fileName, fSecurity); 

见How to grant full permission to a file created by my application for ALL users?的更具体的例子。

在原来的问题，它听起来像你想要拒绝FileSystemRights.Delete权利。