从 WINFORM C# 中的两个日期获取年份和剩余天数

Question

I am trying to get the year(s) from two dates, and if the year(s) are not integer eg 2, 3 then I need to resolve the remaining days.

This is a rough code that I have so far:

DateTime inTime = Convert.ToDateTime(LblFirstDate.Text);
DateTime outTime = Convert.ToDateTime(LblSecondDate.Text);

double VTotalDay = outTime.Subtract(inTime).Days;

if (VTotalDay < 365)
{
    LblDays.Text = "Days: " + VTotalDay.ToString();
}
else
{
    double VOver365 = (outTime - inTime).Days / 365.25;
    LblDays.Text = "Years: " +  VOver365.ToString();
}

Entering these dates: 7/11/2022, 6/29/2024 will yield 1.9685 which is a over a year but under 2 years.

Most of the example I found only show Year, Month and days remaining.

I trying to get the remaining days from this. I do not need the month, just the days. Eg 1 year xxx days.

Any suggestion is appreciated. Thx

Answer 1

What you need to do is take the floor of VOver365 for the years and use the modulus operator to get the number of days.

var years = Math.Floor(VOver365);
var days = (outTime - inTime).Days % 365.25;

Answer 2

I used Aca suggestions and resolved the issue.

Here is the modified code:

            DateTime inTime = Convert.ToDateTime(LblFirstDate.Text);
            DateTime outTime = Convert.ToDateTime(LblSecondDate.Text);
            
            double VTotalDay = outTime.Subtract(inTime).Days;

            if (VTotalDay < 365)
            {
                LblYears.Text = "Days: " + VTotalDay.ToString();
            }
            else
            {
                double VOver365 = (outTime - inTime).Days / 365.25;
                var days = (outTime - inTime).Days % 365.25;

                LblYears.Text = Math.Floor(VOver365).ToString() + " Years" + " " + (Math.Round(days, 0)).ToString() + " Days";
            }

If the total days are less then 365 it display the total days, if the total days are over 365 it will make the calculation to math.floor and display the Year from the variable VOver365 . It then Math.Round the remaining days from the variable days .

For date range 7/11/2022, 6/29/2024 from this 1.9685 to