本月月底日期

1. System.DateTime dt = System.DateTime.Now;
2. System.DateTime ThisMonBeginDay = new System.DateTime(dt.Year, dt.Month, 1);
3. System.DateTime ThisMonEndDay = ThisMonBeginDay.AddMonths(1).AddDays(-1);
4. MessageBox.Show("本月月底日期:" + ThisMonEndDay.Day.ToString());



MessageBox.Show("本月月底日期:" + DateTime.DaysInMonth(DateTime.Now.Year, DateTime.Now.Month).ToString