Difference between two DateTimes C#?

Question

I need a function that can return the difference between the below two dates as 24.

DateTime a = new DateTime(2008, 01, 02, 06, 30, 00);
DateTime b = new Dat         


        

Answer 1

The time difference b/w to time will be shown use this method.

 private void HoursCalculator()
    {
        var t1 = txtfromtime.Text.Trim();
        var t2 = txttotime.Text.Trim();
        var Fromtime = t1.Substring(6);
        var Totime = t2.Substring(6);
        if (Fromtime == "M")
        {
             Fromtime = t1.Substring(5);
        }
        if (Totime == "M")
        {
            Totime = t2.Substring(5);
        }

        if (Fromtime=="PM" && Totime=="AM" )
        {
            var dt1 = DateTime.Parse("1900-01-01 " + txtfromtime.Text.Trim());
            var dt2 = DateTime.Parse("1900-01-02 " + txttotime.Text.Trim());
            var t = dt1.Subtract(dt2);
            //int temp = Convert.ToInt32(t.Hours);
            //temp = temp / 2;
            lblHours.Text =t.Hours.ToString() + ":" + t.Minutes.ToString();

        }
        else if (Fromtime == "AM" && Totime == "PM")
        {
            var dt1 = DateTime.Parse("1900-01-01 " + txtfromtime.Text.Trim());
            var dt2 = DateTime.Parse("1900-01-01 " + txttotime.Text.Trim());
            TimeSpan t = (dt2.Subtract(dt1));
            lblHours.Text = t.Hours.ToString() + ":" + t.Minutes.ToString();
        }
        else
        {
            var dt1 = DateTime.Parse("1900-01-01 " + txtfromtime.Text.Trim());
            var dt2 = DateTime.Parse("1900-01-01 " + txttotime.Text.Trim());
            TimeSpan t = (dt2.Subtract(dt1));
            lblHours.Text = t.Hours.ToString() + ":" + t.Minutes.ToString();
        }
    }

use your field id's

var t1 captures a value of 4:00AM

check this code may be helpful to someone.