동구의 블로그

        /// <summary>
        /// Directory의 잠금을 해제합니다.
        /// </summary>
        /// <param name="folderPath"></param>
        private static void UnLock(string folderPath)
        {
            try
            {
                string adminUserName = Environment.UserName;// getting your adminUserName
                System.Security.AccessControl.DirectorySecurity ds = System.IO.Directory.GetAccessControl(folderPath);
                System.Security.AccessControl.FileSystemAccessRule fsa = new System.Security.AccessControl.FileSystemAccessRule(adminUserName,
                    System.Security.AccessControl.FileSystemRights.FullControl, System.Security.AccessControl.AccessControlType.Deny);

                ds.RemoveAccessRule(fsa);
                System.IO.Directory.SetAccessControl(folderPath, ds);
            }
            catch (Exception ex)
            {
            }

        }

        /// <summary>
        /// Directory를 잠급니다.
        /// </summary>
        /// <param name="folderPath"></param>
        private static void Lock(string folderPath)
        {
            try
            {
                string adminUserName = Environment.UserName;// getting your adminUserName
                System.Security.AccessControl.DirectorySecurity ds = System.IO.Directory.GetAccessControl(folderPath);
                System.Security.AccessControl.FileSystemAccessRule fsa = new System.Security.AccessControl.FileSystemAccessRule(adminUserName,
                    System.Security.AccessControl.FileSystemRights.FullControl, System.Security.AccessControl.AccessControlType.Deny);

                ds.AddAccessRule(fsa);
                System.IO.Directory.SetAccessControl(folderPath, ds);

            }
            catch (Exception ex)
            {
            }
        }