how to give permission to file rather than directory

user584018

I'm using below code to give permission to a directory

static void SetPermission(string path)
    {
        if (Directory.Exists(path))
        {
            var directoryInfo = new DirectoryInfo(path);

            // get the ACL of the directory
            var directorySecurity = directoryInfo.GetAccessControl();

            // remove inheritance, copying all entries so that they are direct ACEs
            directorySecurity.SetAccessRuleProtection(true, true);

            // do the operation on the directory
            directoryInfo.SetAccessControl(directorySecurity);

            // re-read the ACL
            directorySecurity = directoryInfo.GetAccessControl();

            // get the well known SID for "Users"
            var sid = new SecurityIdentifier(WellKnownSidType.BuiltinUsersSid, null);

            // loop through every ACE in the ACL
            foreach (FileSystemAccessRule rule in directorySecurity.GetAccessRules(true, false, typeof(SecurityIdentifier)))
            {
                // if the current entry is one with the identity of "Users", remove it
                if (rule.IdentityReference == sid)
                    directorySecurity.RemoveAccessRule(rule);
            }

            var ntVirtaulUserName = @"NT Service\ServiceName";

            // Add the FileSystemAccessRule to the security settings. give full control for user 'NT Service\ServiceName' 
            directorySecurity.AddAccessRule(new FileSystemAccessRule(ntVirtaulUserName.Replace(@".\", ""), FileSystemRights.FullControl, AccessControlType.Allow));

            // do the operation on the directory
            directoryInfo.SetAccessControl(directorySecurity);
        }
    }

This is working when giving permission to a directory (Test),

SetPermission(@"C:\Test");

Now I would like to give permission a file under the Test directory (log.txt), how to do that?

Hadi Mohammadi

You can use FileInfo Class to handle permission on files. It's usage is like DirectoryInfo. Here is Microsoft document.

    public static void AddFileSecurity(string FileName, string Account, FileSystemRights Rights, AccessControlType ControlType)
    {

        FileInfo fInfo = new FileInfo(FileName);
        FileSecurity fSecurity = fInfo.GetAccessControl();

        fSecurity.AddAccessRule(newFileSystemAccessRule(Account,Rights,ControlType));
        fInfo.SetAccessControl(fSecurity);

    }

Collected from the Internet

Please contact [email protected] to delete if infringement.