How to Upload Datepicker value in sql server and asp.net

Question

Hi i'm stucked in here 

i'm using ajax date picker for my contact page please 

tell me how to upload date picker value in sql server 

  

 $(function () {

           $("#datepicker").datepicker({

               showOn: "button",

               buttonImage: "images/calendar.gif",

               buttonImageOnly: true

           });

       });

<input type="text" id="datepicker" />    

<asp:TextBox ID="TextBox1" runat="server" ></asp:TextBox>

aspx.cs file

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Data.SqlClient;

using System.Data;

using System.Configuration;

public partial class Mani : System.Web.UI.Page

{

    public string sqlconnectionstring = ConfigurationManager.ConnectionStrings["AJAXConnectionString"].ConnectionString;  

protected void Page_Load(object sender, EventArgs e)

    {        

    }

    protected void Button1_Click(object sender, EventArgs e)

    {

        SqlConnection conn = new SqlConnection(sqlconnectionstring);        

        conn.Open();

    }

}

please help me in this