//截取{}的内容 再写入txt文件
            Regex reg = new Regex(@"(?is)\{[^\{\}]*?\}");
            MatchCollection mc = reg.Matches(f);
            foreach (Match m in mc)
            {
                if (m.Value!="{}")
                {
                    x += "\r\n" + m + "\r\n";
                }         
                
            }