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DateTime d = DateTime.Now;
DateTime d2 = DateTime.Now;
int days = (d2 - d).Days;
System.DateTime date1 = new System.DateTime(1996, 6, 3, 22, 15, 0);
System.DateTime date2 = new System.DateTime(1996, 12, 6, 13, 2, 0);
System.DateTime date3 = new System.DateTime(1996, 10, 12, 8, 42, 0);
// diff1 gets 185 days, 14 hours, and 47 minutes.
System.TimeSpan diff1 = date2.Subtract(date1);
// date4 gets 4/9/1996 5:55:00 PM.
System.DateTime date4 = date3.Subtract(diff1);
// diff2 gets 55 days 4 hours and 20 minutes.
System.TimeSpan diff2 = date2 - date3;
// date5 gets 4/9/1996 5:55:00 PM.
System.DateTime date5 = date1 - diff2;
int days = Math.Ceiling((dt2-dt1).TotalDays)
const byte SplitHour = 12;//分割时间点
public int GetDays()
{
DateTime dtIn = new DateTime(2014, 12, 1, 0, 0, 0);
DateTime dtLeave = new DateTime(2014, 12, 13, 20, 0, 0);
Func<DateTime, DateTime> func = (dt) =>
{
if (dt.Date.AddHours(SplitHour) > dt)
{
dt = dt.Date.AddDays(-1);//小于分割时间的话,把时间往前延一天
}
return dt.Date;
};//修正日期
dtIn = func(dtIn);
dtLeave = func(dtLeave);
int days = (dtLeave - dtIn).Days;
if (days == 0)
{
days = 1;
}
return days;
}
int days = (int)(DateTime.Now - Convert.ToDateTime(shijian.Text)).TotalDays;
取整了,不管过不过12点都算是一天了。lable13.Tetx=ExecDateDiff(DateTime.Parse(shijian.Text), DateTime.Parse(tuifang.Text));
//返回22.85 天 // return ts3.TotalDays.ToString(); 改成 return ts3.Days.ToString(); 结果是22
[code=csharp]/// <summary>
/// 程序执行时间测试
/// </summary>
/// <param name="dateBegin">开始时间</param>
/// <param name="dateEnd">结束时间</param>
/// <returns>返回(天)单位</returns>
public static string ExecDateDiff(DateTime dateBegin, DateTime dateEnd)
{
TimeSpan ts1 = new TimeSpan(dateBegin.Ticks);
TimeSpan ts2 = new TimeSpan(dateEnd.Ticks);
TimeSpan ts3 = ts1.Subtract(ts2).Duration();
//你想转的格式
return ts3.TotalDays.ToString();
}
[/code]
DateTime dt1=Convert.ToDateTime(textBox1.Text);
DateTime dt2=Convert.ToDateTime(textBox2.Text);
TimeSpan ts = dt2 - dt1;
int d = ts.Days;