禁用复制/粘贴到特定文件夹 - C#

Question

I have this C# program:

TestProgram:
        static void Main(string[] args)
                {
                    var path = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);            
                    var directory = Directory.CreateDirectory(Path.Combine(path, "folder"));
                    using (StreamWriter sw = new StreamWriter(Path.Combine(directory.FullName, "example.txt")))
                    {
                        sw.WriteLine("hi");
                    }
                    var directorySecurity = directory.GetAccessControl();
                    var administratorRule = new FileSystemAccessRule("Administrators", FileSystemRights.FullControl, InheritanceFlags.ContainerInherit | InheritanceFlags.ObjectInherit, PropagationFlags.None, AccessControlType.Allow);
                    var usersRole = new FileSystemAccessRule("Users", FileSystemRights.Read, InheritanceFlags.ContainerInherit | InheritanceFlags.ObjectInherit, PropagationFlags.None, AccessControlType.Allow);
                    directorySecurity.AddAccessRule(administratorRule);
                    directorySecurity.AddAccessRule(usersRole);
                    directory.SetAccessControl(directorySecurity);            
                }

So, I want to create a directory which only Administrators can edit the name and the content.

In order to test this code snippet, I've copied this directory into C: and I've created a usertest which is member of Users group and stop. This works fine because usertest cannot edit example.txt . But if I (as usertest ) create a test.txt file on C:\Users\usertest\Desktop and copy/paste into C:\folder created by the execution of TestProgram.exe , the operation is successful. How can I edit the C# program in order to avoid the copy/paste into folder ?

Before you ask, I've already search in StackOverflow but nothing seems to be right for my context.

Thanks

EDIT: on C: folder, the Users group ( usertest is a member of it) has the:

• Read and execute
• Read
• List folder content

rights. So, how can I inhibit the inheritance from C: to folder ?

Answer 1

To stop inheritance in Windows 11:

Windows explorer -> Right click on the folder -> Select the menu option named "Properties" -> Change to the tab named "Security" -> Click the button named "Advanced Settings" -> Hit the button at the bottom named "Disable inheritance".

The Advanced Settings option has a really useful tab named "Effective access" where you can see what can actually do users or groups to that object.

If you want to do it using c#, you can call DirectorySecurity.SetAccessRuleProtection() and make the bool preserveInheritance to false.