C#留言时间格式化

namespace test{  class Program  {    static void Main(string[] args)    {      DateTime now = DateTime.Now;      DateTime time = Convert.ToDateTime( "2014-03-17 11:02:00");      TimeSpan ts = now - time;      if (time.Year == now.Year)      {        if (ts.Days < 1 && now.Day == time.Day)        {          if (ts.Hours < 1)          {            if (ts.Minutes < 1)            {              string s=ts.Seconds.ToString() + "秒前爱我别走给您留言";              Console.WriteLine(s);              Console.ReadLine();              return;            }            string a = ts.Minutes.ToString() + "分钟前爱我别走给您留言";             Console.WriteLine(a);             Console.ReadLine();             return;          }          string b = "今天 " + time.ToString("HH:mm") + "爱我别走给您留言";          Console.WriteLine(b);          Console.ReadLine();          return;        }        Console.WriteLine(time.Month.ToString()+"月" + time.Day.ToString() +"日"+ time.Hour.ToString("#00")+"小时" + time.Minute.ToString("#00")+"分钟前"+"爱你的他给你留言了");      }      Console.ReadLine();    }  }}

     private string DateDiff(DateTime DateTime1,DateTime DateTime2)     {       string dateDiff=null;       try       {         TimeSpan ts1=new  TimeSpan(DateTime1.Ticks);         TimeSpan ts2=new  TimeSpan(DateTime2.Ticks);         TimeSpan ts=ts1.Subtract(ts2).Duration();         dateDiff=ts.Days.ToString()+"天"             +ts.Hours.ToString()+"小时"             +ts.Minutes.ToString()+"分钟"             +ts.Seconds.ToString()+"秒";       }       catch       {       }       return dateDiff;     }