检查日期范围是否在C＃中是连续的？ [英] Check if date range is sequential in c#?
问题描述
假设我有一个用户界面，用户可以在其中选择日期。有没有办法检查所选日期是否是连续的，例如：
Assume I have a user interface where the user can select days. Is there a way to check if the days selected are sequential, such as:
4 / 4、4 / 5、4 / 6、4 / 7、4 / 8 ，4 / 9、4 / 10或
4/4, 4/5, 4/6, 4/7, 4/8, 4/9, 4/10 or
4 / 29、4 / 30、5 / 1、5 / 2、5 / 3
4/29, 4/30, 5/1, 5/2, 5/3
我知道我可能可以遍历日期范围并进行检查，但是我更好奇是否已经有内置方法来检查这一点。
I know I probably can loop through the date range and check, but I was more curious if there was a built in method already to check for this.
关于上述情况，它们是有序的，可以过渡到下个月。
Regarding the above scenarios, they are in order and they can roll over into the next month.
我正在使用.NET Framework 2.0，并且不能使用LINQ。
I am using the .NET Framework 2.0 and can't use LINQ.
关于汤姆的答案：
DateTime dtStart = new DateTime(2011,5,4);
DateTime dtEnd = new DateTime(2011,5,11);
int numberOfDaysSelected = 7; //Assume 7 days were selected.
TimeSpan ts = dtEnd - dtStart;
if(ts.Days == numberOfDaysSelected - 1)
{
Console.WriteLine("Sequential");
}
else
{
Console.WriteLine("Non-Sequential");
}
推荐答案
我不相信一种内置的方法来实现所需的结果，但是如果您可以轻松分辨最早和最晚的日期，则可以通过从最新日期中减去最早的日期，然后验证该时间段的天数与所选日期的数量-1。
I do not believe there is a built in method to achieve your desired results but if you can easily tell the earliest and latest dates, you could create a new TimeSpan by subtracting the the earliest date from the latest date and then verifying that the number of days of the timespan matches the number of dates selected - 1.
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