时间差

 1  #region 友好显示时间 2         /// <summary> 3         /// 友好显示时间 4         /// </summary> 5         /// <param name="date"></param> 6         /// <returns></returns> 7         public static string ShowTime(DateTime date) 8         { 9             const int SECOND = 1;10             const int MINUTE = 60 * SECOND;11             const int HOUR = 60 * MINUTE;12             const int DAY = 24 * HOUR;13             const int MONTH = 30 * DAY;14             TimeSpan ts = DateTime.Now - date;15             double delta = ts.TotalSeconds;16             if (delta < 0)17             {18                 return "not yet";19             }20             if (delta < 1 * MINUTE)21             {22                 return ts.Seconds == 1 ? "1秒前" : ts.Seconds + "秒前";23             }24             if (delta < 2 * MINUTE)25             {26                 return "1分钟之前";27             }28             if (delta < 45 * MINUTE)29             {30                 return ts.Minutes + "分钟";31             }32             if (delta < 90 * MINUTE)33             {34                 return "1小时前";35             }36             if (delta < 24 * HOUR)37             {38                 return ts.Hours + "小时前";39             }40             if (delta < 48 * HOUR)41             {42                 return "昨天";43             }44             if (delta < 30 * DAY)45             {46                 return ts.Days + " 天之前";47             }48             if (delta < 12 * MONTH)49             {50                 int months = Convert.ToInt32(Math.Floor((double)ts.Days / 30));51                 return months <= 1 ? "一个月之前" : months + "月之前";52             }53             else54             {55                 int years = Convert.ToInt32(Math.Floor((double)ts.Days / 365));56                 return years <= 1 ? "一年前" : years + "年前";57             }58         }59         #endregion