protected void Page_Load(object sender, EventArgs e)
{
DateTime dt1 = Convert.ToDateTime("02/01/2011");
DateTime dt2 = Convert.ToDateTime("11/04/2010");
//Initializing object and then calling constructor
CalculateDateDifference dateDiff = new CalculateDateDifference(dt1,dt2);
int totalMonths = dateDiff.Months;
int totalDays = dateDiff.Days;
int totalYears= dateDiff.Years;
}
//Class that will calculate the number of days, months and years between two given dates.
public class CalculateDateDifference
{
private int[] monthDay = new int[12] { 31, -1, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
private DateTime fromDate;
private DateTime toDate;
private int year;
private int month;
private int day;
//Public type Constructor
public CalculateDateDifference(DateTime d1, DateTime d2)
{
int increment;
//To Date must be greater
if (d1 > d2)
{
this.fromDate = d2;
this.toDate = d1;
}
else
{
this.fromDate = d1;
this.toDate = d2;
}
/// Day Calculation
increment = 0;
if (this.fromDate.Day > this.toDate.Day)
{
increment = this.monthDay[this.fromDate.Month - 1];
}
/// if it is february month
/// if it's to day is less then from day
if (increment == -1)
{
if (DateTime.IsLeapYear(this.fromDate.Year))
{
// leap year february contain 29 days
increment = 29;
}
else
{
increment = 28;
}
}
if (increment != 0)
{
day = (this.toDate.Day + increment) - this.fromDate.Day;
increment = 1;
}
else
{
day = this.toDate.Day - this.fromDate.Day;
}
///month calculation
if ((this.fromDate.Month + increment) > this.toDate.Month)
{
this.month = (this.toDate.Month + 12) - (this.fromDate.Month + increment);
increment = 1;
}
else
{
this.month = (this.toDate.Month) - (this.fromDate.Month + increment);
increment = 0;
}
///
/// year calculation
///
this.year = this.toDate.Year - (this.fromDate.Year + increment);
}
public override string ToString()
{
//return base.ToString();
return this.year + " Year(s), " + this.month + " month(s), " + this.day + " day(s)";
}
public int Years
{
get
{
return this.year;
}
}
public int Months
{
get
{
return this.month;
}
}
public int Days
{
get
{
return this.day;
}
}
}