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private int DatePart(System.DateTime dt)
{
int weeknow = Convert.ToInt32(dt.DayOfWeek);//今天星期几
int daydiff = (-1) * (weeknow + 1);//今日与上周末的天数差
int days = System.DateTime.Now.AddDays(daydiff).DayOfYear;//上周末是本年第几天
int weeks = days / 7;
if (days % 7 != 0)
{
weeks++;
}
//此时,weeks为上周是本年的第几周
return (weeks + 1);
}
DateTime dt = Convert.ToDateTime("2010-08-19");
Response.Write(DatePart(dt).ToString()); //结果:34
DateTime dt = Convert.ToDateTime("2008-08-08 ");
int i = dt.Month;
double d= (double)i / 2;
if (d < 2.0)
{
Response.Write("第1季度");
}
else if (d >= 2 && d <= 3)
{
Response.Write("第2季度");
}
else if (3 < d &&d< 5)
{
Response.Write("第3季度");
}
else
{
Response.Write("第4季度");
}