在C＃中設置文件權限＃

Question

我想在C＃中設置文件的權限爲「無法刪除」，只能讀取。但我不知道該怎麼做。你可以幫我嗎 ？

Answer 1

看看File.SetAttributes()。網上有很多關於如何使用它的例子。

從MSDN頁摘自：

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複製，這就是：

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

Answer 3

這是關於屬性（見JB的答案）或權限，即讀/寫訪問等？在後一種情況下，請參見File.SetAccessControl。

從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); 

見How to grant full permission to a file created by my application for ALL users?的更具體的例子。

在原來的問題，它聽起來像你想要拒絕FileSystemRights.Delete權利。