How to convert form int to datetime

Why dont you use DateTime as it is. you can get the hour from it. See code below:
date.ToString("HH")

Try this code:

long  ns = 10000000000000;
DateTime date = new DateTime(ns, DateTimeKind.Local);

hope it can help u!

hi madhu,

i also tried a lot but getting exception converting from int to datetime.
i used explicit typecasting.
see here,

int a= textbox1.text(if u will enter date in textbox)
DateTime dt= Convert.Toint32(a);
MesageBox.Show(""+dt);

For performance issues I've written new Classes for Date And Time named FriendsDate and FriendsTime:

/// <summary>Light Date Class</summary>
public class FriendsDate
{
    public FriendsDate() { }
    public FriendsDate(int date) // 13901020
    {
        if (date < 10101)
            date = 10101;
        Year = date / 10000;
        date = date % 10000;
        Month = date / 100;
        Day = date % 100;
    }

    int day = 1, month = 1, year = 1300;
    public int Day
    {
        get { return day; }
        set { day = (value <= 0 || value > 31 ? 1 : value); }
    }
    public int Month
    {
        get { return month; }
        set { month = (value <= 0 || value > 12 ? 1 : value); }
    }
    public int Year
    {
        get { return year; }
        set { year = (value <= 0 || value >= 10000 ? 1 : value); }
    }
    char separator = '/';
    public char Separator
    {
        get { return separator; }
        set { separator = value; }
    }

    public int Value
    {
        get { return year * 10000 + month * 100 + day; }
    }

    public override string ToString()
    {
        string sep = separator.ToString();
        return year.ToString("0000") + sep +
                month.ToString("00") + sep +
                day.ToString("00");
    }

    public static FriendsDate Parse(string date)
    {
        int _year, _month, _day;
        int.TryParse(date.Substring(0, 4), out _year);
        int.TryParse(date.Substring(5, 2), out _month);
        int.TryParse(date.Substring(8, 2), out _day);
        return new FriendsDate() { Year = _year, Month = _month, Day = _day };
    }

    public static implicit operator int(FriendsDate date)
    {
        if (date == null)
            return 0;
        return date.year * 10000 + date.month * 100 + date.day;
    }
}

And

public class FriendsTime
{
    public FriendsTime()
    {
        Hour = System.DateTime.Now.Hour;
        Minute = System.DateTime.Now.Minute;
        Second = System.DateTime.Now.Second;
    }
    public FriendsTime(int time) // 172034   17:20:34
    {
        if (time > 235959 || time < 0)
            time = 0;
        Hour = time / 10000;
        time = time % 10000;
        Minute = time / 100;
        Second = time % 100;
    }

    int second = 1, minute = 1, hour = 1300;
    public int Second
    {
        get { return second; }
        set { second = (value < 0 || value > 59 ? 0 : value); }
    }
    public int Minute
    {
        get { return minute; }
        set { minute = (value < 0 || value > 59 ? 0 : value); }
    }
    public int Hour
    {
        get { return hour; }
        set { hour = (value < 0 || value > 23 ? 0 : value); }
    }

    public int Value
    {
        get { return hour * 10000 + minute * 100 + second; }
    }

    public override string ToString()
    {
        return hour.ToString("00") + ":" + 
                minute.ToString("00") + ":" + 
                second.ToString("00");
    }
}

And Usage:

FriendsDate d = FriendsDate.Parse("2010-12-05");
int intValue = d.Value;