关于C#判断时间范围的问题

Question

判断某个时间是否在时间范围内例如
08:30   是否在  08:00-20:008:30    是否在  20:00-08:00

Answer 1

(new TimeSpan(8,0,0))<DateTime.TimeOfDay<(new TimeSpan(20,0,0))

Answer 2

先转换成Int32，再用代码逐个判断

Answer 3

 string date1 = maskedTextBox1.Text;
                   DateTime d1 = Convert.ToDateTime(date1);
                   if (d1 < dateTimePicker1.MinDate)
                   {
                       MessageBox.Show("请输入在1753-1-1到9998-12-31之间的时间");
                       label1.Text = "";
                       maskedTextBox1.Text = "";
                       return;
                   }
                   else if (d1 > dateTimePicker1.MaxDate)
                   {
                       MessageBox.Show("请输入在1753-1-1到9998-12-31之间的时间");
                       label1.Text = "";
                       maskedTextBox1.Text = "";
                       return;
                   }

Answer 4

也可以用DateTime类型直接判断，但是“8:30 是否在 20:00-08:00”这个要加上完整的日期，再判断

Answer 5

最后用了一个笨拙的办法解决了
代码如下public static bool TimeScope(string begintime, string endtime, string timestr)
        {
            DateTime date = DateTime.Now;
            DateTime stime = Convert.ToDateTime(ConvertToDataString(date) + " " + begintime);
            DateTime etime = Convert.ToDateTime(ConvertToDataString(date) + " " + endtime);
            DateTime now = Convert.ToDateTime(ConvertToDataString(date) + " " + timestr);            decimal start = Convert.ToDecimal(stime.Hour) + Convert.ToDecimal(stime.Minute) / 100;
            decimal end = Convert.ToDecimal(etime.Hour) + Convert.ToDecimal(etime.Minute) / 100;
            decimal nowtime = Convert.ToDecimal(now.Hour) + Convert.ToDecimal(now.Minute) / 100;            if (end < start)
            {
                if (nowtime >= start || nowtime <= end)
                {
                    return true;
                }
                else
                {
                    return false;
                }
            }
            else
            {
                if (nowtime >= start && nowtime <= end)
                {
                    return true;
                }
                else
                {
                    return false;
                }
            }        }

Answer 6

用TimeSpan+DateTime结合，很容易实现你的想法：DateTime curr = new DateTime(DateTime.Now.Year, DateTime.Now.Month, DateTime.Now.Day, 8, 30, 0);//填实际值
                DateTime t1 = new DateTime(DateTime.Now.Year, DateTime.Now.Month, DateTime.Now.Day, 8, 0, 0);
                DateTime t2 = new DateTime(DateTime.Now.Year, DateTime.Now.Month, DateTime.Now.Day, 20, 0, 0);                TimeSpan span1 = t1.Subtract(curr);
                TimeSpan span2 = t2.Subtract(curr);                if(span1.TotalSeconds<=0 && span2.TotalSeconds>=0)
                {
                    //落在区间范围
                }

Answer 7

            DateTime dt1 = new DateTime(DateTime.Now.Year, DateTime.Now.Month,DateTime.Now.Day,9,0,0);
            DateTime dt2 = new DateTime(DateTime.Now.Year, DateTime.Now.Month, DateTime.Now.Day, 18, 0, 0);            TimeSpan ts1 = dt1.Subtract(DateTime.Now);
            TimeSpan ts2 = dt2.Subtract(DateTime.Now);
            if (ts1.TotalSeconds < 0 && ts2.TotalSeconds > 1)
            {
                Response.Write("OK");
            }