网上的逐行读取代码都不好用，自己写了一个。

        /// <summary>
        /// 逐行读取，包含空行
        /// </summary>
        /// <param name="text"></param>
        /// <returns></returns>
        public static List<string> SplitByLine(string text)
        {
            List<string> lines = new List<string>();
            byte[] array = Encoding.UTF8.GetBytes(text);
            using (MemoryStream stream = new MemoryStream(array))
            {
                using (var sr = new StreamReader(stream))
                {
                    string line = sr.ReadLine();
                    while (line != null)
                    {
                        lines.Add(line);
                        line = sr.ReadLine();
                    };
                }

            }
            return lines;
        }