using System;

public class Program

{

    public static void Main()

    {

        PersianDate pDate= new PersianDate();

        pDate.Year = 1396;

        pDate.Month = 6;

        pDate.Day = 14;

        pDate.Hour = 19;

        pDate.Minute = 17;

        pDate.Second = 38;

        string date = pDate.ToString();

        Console.WriteLine(date);

    }

}

​

public class PersianDate

{

    public int Year;

    public int Month;

    public int Day;

    public int Hour;

    public int Minute;

    public int Second;

    public string MonthName;

    public override string ToString()

    {

        //return String.Concat(Year, "-", Month, "-", Day, "T", Hour, ":", Minute, ":", Second);

        return string.Format("{0}-{1}-{2}T{3}:{4}:{5}",Year,Month,Day,Hour,Minute,Second);

    }

}