C# 获取时间差状态

        /// <summary>
        /// 根据时间获取时间状态
        /// </summary>
        /// <param name="dt"></param>
        /// <returns></returns>
        public string GetTimeInfo(DateTime dt)
        {
            TimeSpan span = DateTime.Now - dt;
            if (span.TotalDays > )
            {
                return dt.ToShortDateString();
            }
            else if (span.TotalDays > )
            {
                return "1个月前";
            }
            else if (span.TotalDays > )
            {
                return "2周前";
            }
            else if (span.TotalDays > )
            {
                return "1周前";
            }
            else if (span.TotalDays > )
            {
                return string.Format("{0}天前", (int)Math.Floor(span.TotalDays));
            }
            else if (span.TotalHours > )
            {
                return string.Format("{0}小时前", (int)Math.Floor(span.TotalHours));
            }
            else if (span.TotalMinutes > )
            {
                return string.Format("{0}分钟前", (int)Math.Floor(span.TotalMinutes));
            }
            else if (span.TotalSeconds >= )
            {
                return string.Format("{0}秒前", (int)Math.Floor(span.TotalSeconds));
            }
            else
            {
                return "刚刚";
            }
        }
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