DateTime dtTarget = DateTime.Now; DateTime FirstDay = dtTarget.AddDays(-DateTime.Now.Day + 1); DateTime LastDay = dtTarget.AddMonths(1).AddDays(-dtTarget.AddMonths(1).Day);
DateTime获取一个月的第一天和最后一天,布布扣,bubuko.com
原文：http://www.cnblogs.com/linyijia/p/3790533.html