C# 获取时间差（几天前，几小时前，几分钟前，几秒前）

         #region 获取时间差string GetTime(BsonString getTime)
         /// <summary>
         /// 获取时间差
         /// </summary>
         /// <param name="getTime">数据库时间</param>
         /// <returns>时间差</returns>
         private string GetTime(BsonString getTime)
         {
             var time1 = DateTime.ParseExact(Convert.ToString(getTime), "yyyy-MM-dd HH:mm:ss", null);
             var time = DateTime.Now - time1;

             if (time.TotalHours > )
             {
                 return Math.Floor(time.TotalDays) + "天前";
             }
             if (time.TotalHours > )
             {
                 return Math.Floor(time.TotalHours) + "小时前";
             }
             if (time.TotalMinutes > )
             {
                 return Math.Floor(time.TotalMinutes) + "分钟前";
             }
             return Math.Floor(time.TotalSeconds) + "秒前";
         }
         #endregion