C# \/date，1498820611133+0800\/ 转DateTime

开发中经常遇到日期转换问题,特别是做接口的时候,现在整理了下时间戳转为C#格式时间的方法:

 /// <summary>
        /// 时间戳转为C#格式时间
        /// </summary>
        /// <param name="timeStamp"></param>
        /// <returns></returns>
        public string GetTime(string timeStamp)
        {
            //处理字符串,截取括号内的数字
            var strStamp = Regex.Matches(timeStamp, @"(?<=\()((?<gp>\()|(?<-gp>\))|[^()]+)*(?(gp)(?!))").Cast<Match>().Select(t => t.Value).ToArray()[0].ToString();
            //处理字符串获取+号前面的数字
            var str = Convert.ToInt64(strStamp.Substring(0, strStamp.IndexOf("+")));
            long timeTricks = new DateTime(1970, 1, 1).Ticks + str * 10000 + TimeZone.CurrentTimeZone.GetUtcOffset(DateTime.Now).Hours * 3600 * (long)10000000;
            return new DateTime(timeTricks).ToString("yyyy-MM-dd HH:mm:ss");

        }
        /// <summary>
        /// DateTime时间格式转换为Unix时间戳格式
        /// </summary>
        /// <param name="time"></param>
        /// <returns></returns>
        public int ConvertDateTimeInt(System.DateTime time)
        {

            System.DateTime startTime = TimeZone.CurrentTimeZone.ToLocalTime(new System.DateTime(1970, 1, 1));

            return (int)(time - startTime).TotalSeconds;

        }