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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