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Question

          程序就是要实现查看本月的日期范围，请问第四行的括号应该加上什么才能满足？？            DateTime today=DateTime.Today;
            DateTime day1=new DateTime(today.Year,today.Month,today.Day);            DateTime day2=day1.AddMonths(1).AddDays();            label1.Text=string.Format("本月的日期范围是{0：M}到{1：M}",day1,day2);

Answer 1

DateTime today=DateTime.Today;
  DateTime day1=new DateTime(today.Year,today.Month,1,0,0,0);  DateTime day2=day1.AddMonths(1);
day2=day2.AddDays(-1);  label1.Text="本月的日期范围是1---"+day2.day.tostring();

Answer 2

            DateTime today = DateTime.Today;
            DateTime day1 = new DateTime(today.Year, today.Month, today.Day);
            Int32 days = DateTime.DaysInMonth(today.Year, today.Month);
            DateTime day2 = new DateTime(today.Year, today.Month, days);            Console.WriteLine(string.Format("本月的日期范围是{0}到{1}", day1, day2));

Answer 3

DateTime.Now.Year.ToString() + DateTime.Now.Month.ToString() + "1"; //第一天
DateTime.Parse(DateTime.Now.Year.ToString() + DateTime.Now.Month.ToString() + "1").AddMonths(1).AddDays(-1).ToShortDateString();//最后一天

Answer 4

开始一定是1号了
结束就用
DateTime.DaysInMonth(DateTime.Now.Year, DateTime.Now.Month)得到这个月的天数，自然就得到最后的日期了

Answer 5

 //一般的写法
                 DateTime.Now.Year.ToString() + DateTime.Now.Month.ToString() + "1"; //第一天
                 DateTime.Parse(DateTime.Now.Year.ToString() + DateTime.Now.Month.ToString() + "1").AddMonths(1).AddDays(-1).ToShortDateString();//最后一天

Answer 6

label1.Text = string.Format("本月的日期范围是{0}到{1}", day1, day2);

Answer 7

DateTime day1=new DateTime(today.Year,today.Month,1);
DateTime day2=day1.AddMonths(1).AddDays(-1);