how to compare two datetimepicker values in c# [duplicate]

问题

I have a problem with a Windows Form application which has two DateTimePicker controls showing "DATE OF BIRTH" and "DATE OF JOINING".

I want to compare the values of these controls such that date of birth should be not less than and not greater than and should not be equal less than and not greater than and should not be equal...

How can I do this?

回答1:

Try this code

DateTimePicker dtBDay = new DateTimePicker();
dtBDay.Value = DateTime.Now.AddYears(-5);
DateTimePicker dtJoin = new DateTimePicker();
dtJoin.Value = DateTime.Now;
if (dtBDay.Value >= dtJoin.Value)
{
    throw new Exception("Date of Join cannot be less than or equal to Date of Birth");
}

Hope this will help

回答2:

As suggested by jbutler483

I tried to do but I couldn't get any solution finally as my own knowledge I used following code

 private void dtpdob_ValueChanged(object sender, EventArgs e)
  {
      int year = DateTime.Today.Year - dtpdob.Value.Year;
      int month = DateTime.Today.Month - dtpdob.Value.Month;
      int day = DateTime.Today.Day - dtpdob.Value.Day;
      var a = year.ToString();
      var b = month.ToString();
      var c = day.ToString();
      if (day != 0 && month!=0 && year!=0)
      {
          if(day!=1)
          txtage.Text = a + " Years " + b + " Months " + c + " Days ";
          else
              txtage.Text = a + " Years " + b + " Months " + c + " Day ";
      }
      else if (day == 0 && month == 0)
          txtage.Text = a + " Years ";
      else if (day == 0 && month != 0)
          txtage.Text = a + " Years " + b + " Months ";
      else
          txtage.Text = a + " Years " + b + " Months " + c + " Days "; 
  }

来源：https://stackoverflow.com/questions/25663033/how-to-compare-two-datetimepicker-values-in-c-sharp

标签

winforms

datetimepicker