C# 添加一个用户对文件或者文件夹的所有权限

private void ModifyFilePermission(string path, string user, FileType filetype)
        {
            if (filetype == FileType.File)
            {
                FileInfo fileinfo = new FileInfo(path);
                FileSecurity fileSecurity = fileinfo.GetAccessControl();
                fileSecurity.AddAccessRule(new FileSystemAccessRule(user, FileSystemRights.FullControl, AccessControlType.Allow));
                fileinfo.SetAccessControl(fileSecurity);
            }
            else if (filetype == FileType.Directory)
            {
                DirectoryInfo di = new DirectoryInfo(path);
                DirectorySecurity dirSecurity = di.GetAccessControl();
                dirSecurity.AddAccessRule(new FileSystemAccessRule(user, FileSystemRights.FullControl, AccessControlType.Allow));
                di.SetAccessControl(dirSecurity);
            }
        }

        enum FileType
        {
            Directory,
            File
        }