C#.NET里如何或得当前周的数字？

[shinedew]

想获取当前日期是这一年的第几周，代码如何实现？

[shinedew]

在线等！

[sdl2005lyx]

学习，帮顶！

[小y的CSDN博客]

dayOfYear=DateTime.Now.DayOfYear/7+1;

[小y的CSDN博客]

weekOfYear=DateTime.Now.DayOfYear/7+1;

[小y的CSDN博客]

星期天是下一个星期的第一天吧 呵

[shinedew]

试一下！

[shinedew]

如果1月1号不是星期日的话，这种计算方法可能会有些出入吧！

[DeanMonica]

using System.Globalization;

CultureInfo CaI = new CultureInfo("zh-CN");
Calendar myCal = myCaI.Calendar;

//日期格式
CalendarWeekRule myCWR = myCI.DateTimeFormat.CalendarWeekRule;
DayOfWeek myFirstDOW = DayOfWeek.Monday;
//本周为第周 周数
int thisWeek = myCal.GetWeekOfYear(DateTime.Now, myCWR, myFirstDOW);

[DeanMonica]

上面打错了

using System.Globalization;

CultureInfo myCI = new CultureInfo("zh-CN");
System.Globalization.Calendar myCal = myCI.Calendar;

//日期格式
CalendarWeekRule myCWR = myCI.DateTimeFormat.CalendarWeekRule;
DayOfWeek myFirstDOW = DayOfWeek.Monday;
//本周为第myCal.GetWeekOfYear( DateTime.Now, myCWR, myFirstDOW )周
int thisWeek = myCal.GetWeekOfYear(DateTime.Now, myCWR, myFirstDOW);

[ji_vicky]

weekOfYear=DateTime.Now.DayOfYear/7+1;
因該沒錯吧？

[早起晚睡]

weekOfYear=DateTime.Now.DayOfYear/7+1;有错

[yx10]

DeanMonica(夏天的叶子) 的方法是对的!

[viena]

private int getWeekNum(DateTime dt)
{
DateTime dt1 = new DateTime(dt.Year,1,1);
TimeSpan ts = dt - dt1;
return (ts.Days+(int)dt1.DayOfWeek) / 7 + 1;
}

[dingxu_ren]

DateTime now = DateTime.Now;
int i = (now.DayOfYear - (int)now.DayOfWeek) / 7 + 1;