年周别查询

Question

求某一天在本年的周别
如:2008-7-1是2008年的第27周

Answer 1

http://topic.csdn.net/t/20030429/19/1723253.html
http://topic.csdn.net/t/20050923/09/4288716.html

Answer 2

    DateTime ^dt = DateTime::UtcNow.Date;
    DateTime ^dtt = dt->AddDays(1-dt->DayOfYear);
    int days = dt->DayOfYear+int(dtt->DayOfWeek);
    int weeks = System::Math::Ceiling(days/7.0);
自己写了个~ 汗

Answer 3

Console.WriteLine(System.DateTime.Now.DayOfYear / 7 + 1);
/*
27
请按任意键继续. . .
*/