How to calculate your age with Dob (date of birth)

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

using System.Data.SqlClient;

namespace WindowsFormsApplication1

{

    public partial class GetYear : Form

    {

        public GetYear()

        {

            InitializeComponent();

        }

        private void btnGet_Click(object sender, EventArgs e)

        {

            // how  to validate  textbox  in windows  application..........

            foreach (Control cc in this.Controls)

            {

                if (cc.GetType() == typeof(TextBox))

                {

                    if (cc.Text == "")

                    {

                        MessageBox.Show("Please enter dob in this format mm/dd/yyyy");

                        return;

                    }

                }

            }

            // code  for  get years,months,days with dob(Date of Birth)

            int days, currentyear, dobyear;

            int c = 0;

            int i;

            days = (int)DateTime.Now.Subtract(Convert.ToDateTime(txtdob.Text)).TotalDays;

            currentyear = (int)DateTime.Now.Year;

            dobyear = (Convert.ToDateTime(txtdob.Text).Year);

            ldays.Text = "No of Days = " + days.ToString();

            for (i = dobyear; i <= currentyear; i++)

            {

                if ((i % 400 == 0) || (i % 4 == 0 && i % 100 != 0))

                    ++c;

            }

            lnoofleapyear.Text = "No of Leap Year = " + c.ToString();

            if (days > 365)

            {

                days = days - c;

            }

            lyear.Text = "Year = " + (days / 365).ToString();

            days = days % 365;

            lyear.Text += " Months = " + (days / 30).ToString();

            lyear.Text += " Days = " + (days % 30).ToString();

}

//First we add Timer Control in Windows Form and set this property

·         Enabled=true

·         Interval=1000

//this code for change Form’s color each second.....

        private void timer1_Tick(object sender, EventArgs e)

        {

            Random rr = new Random();

            string color = rr.Next(100000, 999999).ToString();

            this.BackColor = System.Drawing.ColorTranslator.FromHtml("#" + color);

        }

 

    }

}