我需要在asp.net中更改一周的第一天,即我希望星期六成为一周的第一天.
例如,下面的代码应该在星期一返回3：
(int)DateTime.Now.DayOfWeek
解决方法
您不能影响DateTime.DayOfWeek的值,因为这是一种System.DayOfWeek,它是一个枚举(即值是常量). System.DayOfWeek的定义在下面的代码块中.所以,如果你想把DayOfWeek视为星期一和星期六的3是一周的第一天,那么我必须假设你想要一个基于1到7的编号系统.在这种情况下,你可以做((int)DateTime.Now.DayOfWeek 1)％7 1来获得你想要的数字.如果您不需要这个用于计算,最好只将DateTime.Now.DayOfWeek的值与其枚举常量进行比较(例如if(DateTime.Now.DayOfWeek == DayOfWeek.Monday)…).
// Summary:
// Specifies the day of the week.
[Serializable]
[ComVisible(true)]
public enum DayOfWeek
{
// Summary:
// Indicates Sunday.
Sunday = 0,//
// Summary:
// Indicates Monday.
Monday = 1,//
// Summary:
// Indicates Tuesday.
Tuesday = 2,//
// Summary:
// Indicates Wednesday.
Wednesday = 3,//
// Summary:
// Indicates Thursday.
Thursday = 4,//
// Summary:
// Indicates Friday.
Friday = 5,//
// Summary:
// Indicates Saturday.
Saturday = 6,}
