asp.net 处理和计算微博发布时间

using System;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Ink;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;

namespace MicroBlogForWP7.Classes
{
public class TimeParser
{
/// <summary>
/// 把秒转换成分钟
/// </summary>
/// <returns></returns>
public static int SecondToMinute(int Second)
{
decimal mm = (decimal)((decimal)Second / (decimal)60);
return Convert.ToInt32(Math.Ceiling(double.Parse(mm.ToString())));
}

#region 返回某年某月最后一天
/// <summary>
/// 返回某年某月最后一天
/// </summary>
/// <param name="year">年份</param>
/// <param name="month">月份</param>
/// <returns>日</returns>
public static int GetMonthLastDate(int year, int month)
{
DateTime lastDay = new DateTime(year, month, new System.Globalization.GregorianCalendar().GetDaysInMonth(year, month));
int Day = lastDay.Day;
return Day;
}
#endregion

#region 返回时间差
public static 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();
TimeSpan ts = DateTime2 - DateTime1;
if (ts.Days >= 1)
{
dateDiff = DateTime1.Month.ToString() + "月" + DateTime1.Day.ToString() + "日";
}
else
{
if (ts.Hours > 1)
{
dateDiff = ts.Hours.ToString() + "小时前";
}
else
{
dateDiff = ts.Minutes.ToString() + "分钟前";
}
}
}
catch
{ }
return dateDiff;
}
#endregion

#region 返回该微博是什么时候发的
/// <summary>
/// 返回该微博是什么时候发的
/// </summary>
/// <param name="year">发微博时间</param>
/// <param name="month">当前时间</param>
public static string GetWhenSendTime(DateTime BlogTime, DateTime NowTime)
{
DateTime t1 = BlogTime;
DateTime t2 = NowTime;
string RES = "";
if ((t2 - t1).TotalMinutes > 1440)
{
RES = t1.ToString("yyyy年MM月dd日 HH:mm");
}
else
if ((t2 - t1).TotalMinutes > 60)
{
RES = Math.Floor(((t2 - t1).TotalMinutes / 60)).ToString() + "小时" + (Math.Floor((t2 - t1).TotalMinutes) % 60).ToString() + "分钟前";
}
else
{
if ((Math.Floor((t2 - t1).TotalMinutes) % 60) <= 0) RES = "刚刚更新";
else
RES = (Math.Floor((t2 - t1).TotalMinutes) % 60).ToString() + "分钟前";
}
return RES;
}
#endregion
}
}