学习笔记1

刚在MSDN看了篇文章

Determining the Span Between Two Dates

Example

DateTime oldDate = new DateTime(2002,7,15);
DateTime newDate = DateTime.Now;

// Difference in days, hours, and minutes.
TimeSpan ts = newDate - oldDate;
// Difference in days.
int differenceInDays = ts.Days;

Console.WriteLine("Difference in days: {0} ", differenceInDays);


看了些例子，发现什么都要NEW才可以用：（，真麻烦
日期间的间距要这样才可以得出来，麻烦哦。
int differenceInDays = ts.Days;得出两个日期间相差的天数，
int diffhour= ts.Hours;得出的却不是两个日期间相差的总小时数differenceInDays*24,而是不考虑日期，直接对时间进行比较，现在是18点，他得出的结果会是18。好奇怪哦
分钟就也是如此~~

~~做个记号~~明天再接着找我心中疑问的答案