【C#】DateDiff()

想不到C#竟然沒有DateDiff可以用，只好另外想辦法囉！



private double DateDiff(string howtocompare, System.DateTime startDate, System.DateTime endDate)
{
double diff = 0;
System.TimeSpan TS = new System.TimeSpan(endDate.Ticks - startDate.Ticks);

switch (howtocompare.ToLower())
{
case "year":
diff = Convert.ToDouble(TS.TotalDays / 365);
break;
case "month":
diff = Convert.ToDouble((TS.TotalDays / 365) * 12);
break;
case "day":
diff = Convert.ToDouble(TS.TotalDays);
break;
case "hour":
diff = Convert.ToDouble(TS.TotalHours);
break;
case "minute":
diff = Convert.ToDouble(TS.TotalMinutes);
break;
case "second":
diff = Convert.ToDouble(TS.TotalSeconds);
break;
}

return diff;
}



en → zh

.TotalSeconds