C# 计算DataTime的4种时间差的方法(相差天数、相差小时、相差分钟、相差秒)

public double DiffSeconds(DateTime startTime,DateTime endTime){
    TimeSpan secondSpan=new TimeSpan(endTime.Ticks-startTime.Ticks);
    return secondSpand.TotalSeconds;
}

public double DiffMinutes(DateTime startTime,DateTime endTime){
    TimeSpan minuteSpan=new TimeSpan(endTime.Ticks-startTime.Ticks);
    return minuteSpan.TotalMinutes;
}

public double DiffHours(DateTime startTime,DateTime endTime){
    TimeSpan hoursSpan=new TimeSpan(endTime.Ticks-startTime.Ticks);
    return hoursSpan.TotalHours;
}

public double DiffDays(DateTime startTime,DateTime endTime){
    TimeSpan daysSpan=new TimeSpan(endTime.Ticks-startTime.Ticks);
    return daysSpan.TotalDays;
}

public int DiffDays(DateTime startTime,DateTime endTime){
    TimeSpan daysSpan=new TimeSpan(endTime.Ticks-startTime.Ticks);
    return daysSpan.Days;
}