Question

我来自CodeProject，但他们似乎没有回答我的问题。我只是希望桌面文件具有安全权限（使文件不可移动，可复制或可删除）。这可以在文件的“属性！”中手动完成。我正在使用C＃，非常感谢您的帮助 - 谢谢！

正如下面所说的帮助者，如果不可能使可读文件不可复制......是否可以使其不可移动和删除？

Answer 1

除了不可复制之外，所有这些都是可能的。除非您限制系统上的所有复制（这是一项艰巨的任务），否则始终可以复制可读文件。但是，您当然可以防止它被移动或删除。

从文件权限角度来看，您需要将所有者设置为管理员，然后向相关用户授予只读权限。这将允许他们读取文件但不删除或移动它。

使用FileInfo.SetAccessControl中的System.IO方法，这样做非常简单; here's the documentation to help out

编辑以添加示例，以MS为例：

using System;
using System.IO;
using System.Security.AccessControl;

namespace FileSystemExample
{
    class FileExample
    {
        public static void Main()
        {
            try
            {
                string FileName = "c:/test.txt";

                Console.WriteLine("Adding access control entry for " + FileName);

                // Add the access control entry to the file.
                // Before compiling this snippet, change MyDomain to your 
                // domain name and MyAccessAccount to the name 
                // you use to access your domain.
                AddFileSecurity(FileName, @"MyDomain\MyAccessAccount", FileSystemRights.ReadData, AccessControlType.Allow);

                Console.WriteLine("Removing access control entry from " + FileName);

                // Remove the access control entry from the file.
                // Before compiling this snippet, change MyDomain to your 
                // domain name and MyAccessAccount to the name 
                // you use to access your domain.
                RemoveFileSecurity(FileName, @"MyDomain\MyAccessAccount", FileSystemRights.ReadData, AccessControlType.Allow);

                Console.WriteLine("Done.");
            }
            catch (Exception e)
            {
                Console.WriteLine(e);
            }

        }

        // Adds an ACL entry on the specified file for the specified account.
        public static void AddFileSecurity(string FileName, string Account, FileSystemRights Rights, AccessControlType ControlType)
        {
            // Create a new FileInfo object.
            FileInfo fInfo = new FileInfo(FileName);

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

            // Add the FileSystemAccessRule to the security settings. 
            fSecurity.AddAccessRule(new FileSystemAccessRule(Account,
                                                            Rights,
                                                            ControlType));

            // Set the new access settings.
            fInfo.SetAccessControl(fSecurity);

        }

        // Removes an ACL entry on the specified file for the specified account.
        public static void RemoveFileSecurity(string FileName, string Account, FileSystemRights Rights, AccessControlType ControlType)
        {
            // Create a new FileInfo object.
            FileInfo fInfo = new FileInfo(FileName);

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

            // Add the FileSystemAccessRule to the security settings. 
            fSecurity.RemoveAccessRule(new FileSystemAccessRule(Account,
                                                            Rights,
                                                            ControlType));

            // Set the new access settings.
            fInfo.SetAccessControl(fSecurity);

        }
    }
}

使文件不可移动，可复制或可删除？

1 个答案: