using System;

using System.Data;

using System.Configuration;

using System.Collections;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

public partial class ApplyNow : System.Web.UI.Page
{
    private String dob;

protected void btn_applyNow_Click(object sender, EventArgs e)
    {
        if (getDob())
        {
            if (isAvailable(txt_emailAddress.Text))
                insertStudent();

            else
                lbl_error.Text = "Email already exists";
        }

        else
        {
            lbl_error.Text = "Please enter valid date";
        }
    }

private bool getDob()
    {
        dob = ddl_month.SelectedValue + " " + ddl_day.SelectedValue + ", " + 
        ddl_year.SelectedValue;

        try
        {
            DateTime.Parse(dob);
            return true;
        }

        catch
        {
            return false;
        }
    }

 private void insertStudent()
    {

         //coding    

    }
 }

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private void fillDropdown()
    {
        int year = DateTime.Now.Year;
        year -= 1;

        for (int i = 0; i <= 100; i++)
        {
            ddl_year.Items.Add(year.ToString());
            year--;
        }
    }

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//other related namespaces

using System.Net;

//this is example class, you can code it in your own way

public class getIP : System.Web.UI.Page
{

     //other related coding

     IPHostEntry IPHost = Dns.GetHostEntry(Dns.GetHostName());
     String ip = IPHost.AddressList[0].ToString();

}

**************************LINKS******************************

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CREATE TABLE geoip (
  start_ip CHAR(15) NOT NULL,
  end_ip CHAR(15) NOT NULL,
  start_long INT NOT NULL,
  end_long INT NOT NULL,
  country_code CHAR(2) NOT NULL,
  country_name VARCHAR(50) NOT NULL);


BULK INSERT geoip
 FROM 'd:\geoip.txt'
  WITH
  (
      FIELDTERMINATOR = ',',
      ROWTERMINATOR = '\n'
  )


Download 'geoip.txt' here

**************************LINKS******************************

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https://hammadsiddiquiblog.wordpress.com/

My Youtube channel:

https://www.youtube.com/channel/UCo-MRxKf_MttmSN9WddYdbw/

**************************LINKS******************************