int days = DateTime.DaysInMonth ( 2009, 9 ); int days = DateTime.DaysInMonth ( DateTime.Now.Year, DateTime.Now.Month);
时间: 2024-10-09 04:05:16
int days = DateTime.DaysInMonth ( 2009, 9 ); int days = DateTime.DaysInMonth ( DateTime.Now.Year, DateTime.Now.Month);