/// <summary>
/// Vérifie que les dates de début et de fin sont valides
/// </summary>
private void DatesValidation()
{
if (dateDebutProjet.Value > dateFinProjet.Value)
{
dateFinProjet.Value = dateDebutProjet.Value.AddDays(1);
}
else if (dateDebutProjet.Value.Month > 8)
{
if (DateTimeSpan.CompareDates(dateDebutProjet.Value, dateFinProjet.Value).Months > (18 - dateDebutProjet.Value.Month))
{
dateFinProjet.Value = dateDebutProjet.Value.AddMonths(18 - dateDebutProjet.Value.Month);
}
}
else if (dateDebutProjet.Value.Month < 7)
{
if (DateTimeSpan.CompareDates(dateDebutProjet.Value, dateFinProjet.Value).Months > (7 - dateDebutProjet.Value.Month))
{
dateFinProjet.Value = dateDebutProjet.Value.AddMonths(7 - dateDebutProjet.Value.Month);
}
}
}
/// <summary>
/// Compare deux dates entre elles et renvoie un objet comportant le temps qui les sépare en secondes, minutes, heures, jours, mois et années
/// </summary>
/// <param name="date1"></param>
/// <param name="date2"></param>
/// <returns>un écart de date</returns>
public static DateTimeSpan CompareDates(DateTime date1, DateTime date2)
{
if (date2 < date1)
{
var sub = date1;
date1 = date2;
date2 = sub;
}
DateTime current = date1;
int years = 0;
int months = 0;
int days = 0;
Phase phase = Phase.Years;
DateTimeSpan span = new DateTimeSpan();
int officialDay = current.Day;
while (phase != Phase.Done)
{
switch (phase)
{
case Phase.Years:
if (current.AddYears(years + 1) > date2)
{
phase = Phase.Months;
current = current.AddYears(years);
}
else
{
years++;
}
break;
case Phase.Months:
if (current.AddMonths(months + 1) > date2)
{
phase = Phase.Days;
current = current.AddMonths(months);
if (current.Day < officialDay && officialDay <= DateTime.DaysInMonth(current.Year, current.Month))
{
current = current.AddDays(officialDay - current.Day);
}
}
else
{
months++;
}
break;
case Phase.Days:
if (current.AddDays(days + 1) > date2)
{
current = current.AddDays(days);
var timespan = date2 - current;
span = new DateTimeSpan(years, months, days, timespan.Hours, timespan.Minutes, timespan.Seconds, timespan.Milliseconds);
phase = Phase.Done;
}
else
{
days++;
}
break;
}
}
return(span);
}