给你一个获取当前周的开始日期和结束日期的小例子.//一周开始时间和结束时间

DateTime dtWeekSt; 
DateTime dtWeekEd;
//当前日期
DateTime dtNow = DateTime.Now.Date;
//今天是星期几
int iNowOfWeek = (int)dtNow.DayOfWeek;
if (iNowOfWeek == 0)
{
//按中国的习惯,星期天是最后一天
iNowOfWeek = 7;
}
dtWeekSt = dtNow.AddDays(1 - iNowOfWeek);
dtWeekEd = dtNow.AddDays(7 - iNowOfWeek);

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