/// <summary>
/// 获得当周起始日期 贾世义
/// </summary>
/// <param name=startDate>提供日期</param>
/// <param name=weekStart>周开始(为周日 周一 周二 周三 周四 周五 周六)</param>
/// <returns></returns>
public static DateTime GetWeekStart(DateTime startDate int weekStart)
{
int day = (int)startDateDayOfWeek;
if (day > weekStart)
{
return startDateAddDays(weekStart day);
}
else if (day < weekStart)
{
return startDateAddDays(weekStart day );
}
else
{
return startDate;
}
}
