How to count Age using Datepiker or Textbox ?

Aspx:


<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="age.aspx.cs" Inherits="countage.age" %>







   


   

       
           
           
           
           
           
           
       
       
   

   
   

   

Aspx.cs:


using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;


namespace countage
{
    public partial class age : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {


        }
        protected void Selection_changed(object source, EventArgs args)
        {


            if(Calendar1.SelectedDate != null)
            {


                int dob = Calendar1.SelectedDate.Year;
                int today = DateTime.Now.Year;
                string age = (today -dob).ToString();
                Label1.Text = string.Format("the age is {0}", age);




            }


        }


    }
}


By using javscript u can do in this way


using Javascript:


        function{
$('#dob').datepicker({
onSelect: function(value, ui) {
var today = new Date(),
dob = new Date(value),
age = new Date(today - dob).getFullYear() - 1970;

$('#age').text(age);
},
maxDate: '+0d',
yearRange: '1920:2014',
changeMonth: true,
changeYear: true
});
        }