Change permissions of folders

Question

I want to change some folder permissions (set to Read-Only) to ReadWriteExecute!

I wrote this code, but the folder permission is still Read-Only:

private void ChangePermissions(string folder)
{
    string userName = Environment.UserName;

    FileSystemAccessRule accessRule = new FileSystemAccessRule(userName, FileSystemRights.FullControl, InheritanceFlags.ContainerInherit 
                | InheritanceFlags.ObjectInherit, PropagationFlags.None, AccessControlType.Allow);

    DirectoryInfo directoryInfo = new DirectoryInfo(folder);
    DirectorySecurity directorySec = directoryInfo.GetAccessControl();


    directorySec.AddAccessRule(accessRule);
    directoryInfo.SetAccessControl(directorySec);
}

If I want delete this directory with Directory.Delete(folder, true) I get this error message:

"Access to the path 'entries' is denied."

Sure, the permissions are still Read-Only!

What is wrong here?

Solution

You could try something like this:

var dirInfo = new DirectoryInfo(folder);
dirInfo.Attributes &= ~FileAttributes.ReadOnly;

This uses the bitwise logical AND operator (&=) to append to the existing Attributes property the inverse of FileAttributes.ReadOnly (because ~ is bitwise NOT).

Comments

[leon22]

Same error. The 'entries' path is a file in the folder, maybe I must recursively change the permissions?! (but I dont understand why the Read-Only flag is still set to root folder?)

[Robbie]

If you need to recursively change the file permissions, this SO post might help: stackoverflow.com/questions/191399/…

[leon22]

Thx. With the code from stackoverflow.com/questions/191399/… all went fine!

[Robbie]

@YoushaAleayoub permissions are handled using FileAttributes