/**********************************************************************************************************

* Program name : Time interval *

* Program ver. : 1.0 *

* Created by : SharpDevelop *

* Code author : Perić Željko *

* Code language : C# *

* Date created : 12.12.2013 *

* Time created : 17:31 *

* *

* *

* Program Description : Program for calculating time distance between two dates. *

* *

* *

* Program Accuracy Notice : Program calculates distance between two dates by finding *

* how many seconds has passed from start date to the end date, *

* and then recalculates seconds into *

* years , months , days , hours , minutes and seconds. *

* *

* exmpl: *

* start date-time 29.03.1972 08:40:00 *

* end date-time 12.12.2013 17:34:58 *

* *

* result *

* 41 years *

* 8 monts *

* 14 days *

* 8 hours *

* 54 minutes *

* 58 seconds *

* *

* Minimum date value 01.01.1753 00:00:00 *

* Maximum date value 31.12.9998 00:00:00 *

* *

* All the best, *

* Author. *

**********************************************************************************************************/

using System;

using System.Windows.Forms;

namespace Time_interval

{

public partial class MainForm : Form

{

public MainForm()

{

//

// The InitializeComponent() call is required for Windows Forms designer support.

//

InitializeComponent();

//

// Set initial values

//

SetInitialValues();

}

void SetInitialValues()

{

//

// Set initial date and time

//

DateTime dt = new DateTime();

dt = DateTime.Now;

dateTimePicker1.Text = dt.ToString();

//

// Set min value for dateTimePicker2

//

dateTimePicker2.MinDate = dateTimePicker1.Value;

}

void DateTimePicker1CloseUp(object sender, EventArgs e)

{

//

// event happens when user selects date from control

// by opening , selecting and closing control

//

//

// Set min value for dateTimePicker2

//

dateTimePicker2.MinDate = dateTimePicker1.Value;

CalculateTimeInterval();

}

void DateTimePicker2CloseUp(object sender, EventArgs e)

{

//

// event happens when user selects date from control

// by opening , selecting and closing control

//

CalculateTimeInterval();

}

void DateTimePicker1ValueChanged(object sender, EventArgs e)

{

//

// event happens when user changes date

// by typing in new value for date

//

//

// Set min value for dateTimePicker2

//

dateTimePicker2.MinDate = dateTimePicker1.Value;

CalculateTimeInterval();

}

void DateTimePicker2ValueChanged(object sender, EventArgs e)

{

//

// event happens when user changes date from control

// by typing in new value for date

//

CalculateTimeInterval();

}

void CalculateTimeInterval()

{

//

// declaration of variables

//

DateTime StartDate;

DateTime EndDate;

TimeSpan TimeInterval;

long years = 0;

long months = 0;

long days = 0;

long hours = 0;

long minutes = 0;

long seconds = 0;

long reminder = 0;

long i = 0;

long j = 0;

StartDate = dateTimePicker1.Value;

EndDate = dateTimePicker2.Value;

if(EndDate.TimeOfDay<StartDate.TimeOfDay)

{

EndDate = EndDate.AddDays(-1);

}

TimeInterval = EndDate.Subtract(StartDate);

seconds = (long)TimeInterval.TotalSeconds;

minutes = Math.DivRem(seconds,60,out reminder);

seconds = reminder;

hours = Math.DivRem(minutes,60,out reminder);

minutes = reminder;

days = Math.DivRem(hours,24,out reminder);

hours = reminder;

years = EndDate.Year - StartDate.Year;

months = (12-StartDate.Month) + ((years-1)*12) + EndDate.Month;

years = Math.DivRem(months,12,out reminder);

months = reminder;

days = EndDate.Day-StartDate.Day;

if(days<0)

{

switch (StartDate.Month)

{

case 1:j=31;

break;

case 2:j=28;if(DateTime.IsLeapYear(StartDate.Year)){j++;}

break;

case 3:j=31;

break;

case 4:j=30;

break;

case 5:j=31;

break;

case 6:j=30;

break;

case 7:j=31;

break;

case 8:j=31;

break;

case 9:j=30;

break;

case 10:j=31;

break;

case 11:j=30;

break;

case 12:j=31;

break;

}

j-= StartDate.Day;

i = EndDate.Day;

days = i+j;

months--;

if(months<0)

{

years--;

months+=12;

}

}

textBox6.Text = seconds.ToString();

textBox5.Text = minutes.ToString();

textBox4.Text = hours.ToString();

textBox3.Text = days.ToString();

textBox2.Text = months.ToString();

textBox1.Text = years.ToString();

}

}

}

/************************************************************************

* Program Licence : *

* *

* Copyright 2012 , Perić Željko *

* (periczeljkosmederevo@yahoo.com) *

* *

* According to it's main purpose , this program is licenced *

* under the therms of 'Free Software' licence agreement. *

* *

* If You do not know what those therms applies to *

* please read explanation at the following link : *

* (http://www.gnu.org/philosophy/free-sw.html.en) *

* *

* Since it is Free Software this program has no warranty of any kind. *

************************************************************************

* Ethical Notice : *

* *

* It is not ethical to change program code signed by it's author *

* and then to redistribute it under the same name , especially *

* if it is incorrect. *

* *

* It is recommended that if you make improvement in program code , *

* to make remarks of it and then to sign it by Your's name , *

* for further redistribution as new major version of program. *

* *

* Author name and references of old program code version should be *

* kept , for tracking history of program development. *

* *

* For any further information please contact code author at his email. *

************************************************************************/

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