List转化为逗号链接的字符串

        /// <summary>
        /// List<int>转化为逗号链接的字符串
        /// </summary>
        /// <param name="lisFrom"></param>
        /// <returns></returns>
        public static string StringJoinCommaFromList(List<int> lisFrom)
        { 
        return String.Join(",", lisFrom.ConvertAll<string>(new Converter<int, string>(m => m.ToString())).ToArray());
        }

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