不错呦!smile@林凯西,确保“准备文件”中的几个文件都有安装,S...您好,看了您这篇帖子觉得很有帮助。但是有个问题想请...我的修改过了怎么还被恶意注册呢 @jjjjiiii 用PJ快9年了,主要是A...PJ3啊,貌似很少有人用PJ了,现在不是WP就是z...@332347365,我当时接入时错误码没有-10...楼主,ChkValue值应为-103是什么意思呢?...大哥 你最近能看到我发的信息,请跟我联系,我有个制...
C#计算指定日期是当年第几周
编辑:dnawo 日期:2013-05-16
C#自带类实现:
自己写函数实现:
复制内容到剪贴板 程序代码
//using System.Globalization;
public static int WeekOfYear(DateTime date)
{
CultureInfo culture = new CultureInfo("zh-CN");
culture.DateTimeFormat.CalendarWeekRule = CalendarWeekRule.FirstDay;
culture.DateTimeFormat.FirstDayOfWeek = DayOfWeek.Monday;
return culture.Calendar.GetWeekOfYear(date, culture.DateTimeFormat.CalendarWeekRule, culture.DateTimeFormat.FirstDayOfWeek);
}
public static int WeekOfYear(DateTime date)
{
CultureInfo culture = new CultureInfo("zh-CN");
culture.DateTimeFormat.CalendarWeekRule = CalendarWeekRule.FirstDay;
culture.DateTimeFormat.FirstDayOfWeek = DayOfWeek.Monday;
return culture.Calendar.GetWeekOfYear(date, culture.DateTimeFormat.CalendarWeekRule, culture.DateTimeFormat.FirstDayOfWeek);
}
自己写函数实现:
复制内容到剪贴板 程序代码
public static int WeekOfYear(DateTime date)
{
//1.计算元旦是周几
DateTime FirstDay = DateTime.Parse(string.Format("{0}-{1}-{2}", date.Year, "1", "1"));
int dayofweek = 0;
switch (FirstDay.DayOfWeek)
{
case DayOfWeek.Monday:
dayofweek = 1;
break;
case DayOfWeek.Tuesday:
dayofweek = 2;
break;
case DayOfWeek.Wednesday:
dayofweek = 3;
break;
case DayOfWeek.Thursday:
dayofweek = 4;
break;
case DayOfWeek.Friday:
dayofweek = 5;
break;
case DayOfWeek.Saturday:
dayofweek = 6;
break;
case DayOfWeek.Sunday:
dayofweek = 7;
break;
}
//2.总天数补足第一周天数
int dayofyear = date.DayOfYear;
if (dayofweek > 1) dayofyear += (dayofweek - 1);
return (int)Math.Ceiling((decimal)dayofyear / 7);
}
{
//1.计算元旦是周几
DateTime FirstDay = DateTime.Parse(string.Format("{0}-{1}-{2}", date.Year, "1", "1"));
int dayofweek = 0;
switch (FirstDay.DayOfWeek)
{
case DayOfWeek.Monday:
dayofweek = 1;
break;
case DayOfWeek.Tuesday:
dayofweek = 2;
break;
case DayOfWeek.Wednesday:
dayofweek = 3;
break;
case DayOfWeek.Thursday:
dayofweek = 4;
break;
case DayOfWeek.Friday:
dayofweek = 5;
break;
case DayOfWeek.Saturday:
dayofweek = 6;
break;
case DayOfWeek.Sunday:
dayofweek = 7;
break;
}
//2.总天数补足第一周天数
int dayofyear = date.DayOfYear;
if (dayofweek > 1) dayofyear += (dayofweek - 1);
return (int)Math.Ceiling((decimal)dayofyear / 7);
}
上一篇: SQL Server设置周一为每周第一天
下一篇: LINQ to Entities分页出错:必须在调用“Skip”方法之前调用方法“OrderBy”
文章来自: 本站原创
引用通告: 查看所有引用 | 我要引用此文章
Tags:
最新日志:
下一篇: LINQ to Entities分页出错:必须在调用“Skip”方法之前调用方法“OrderBy”
文章来自: 本站原创
引用通告: 查看所有引用 | 我要引用此文章
Tags:
最新日志:
评论: 0 | 引用: 0 | 查看次数: 4210
发表评论
请登录后再发表评论!