Showing marker on Google Map ?

Bring data to show on marker Sir

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


namespace FindEvent
{
public partial class map2 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
//if (!this.IsPostBack)
//{
// DataTable dt = this.GetData("select * from Locations");
// rptMarkers.DataSource = dt;
// rptMarkers.DataBind();
//}
}

protected void UpdatePanel1_Load(object sender, EventArgs e)
{
//Linq is used to load the table to the code
GoogleDataClassesDataContext data = new GoogleDataClassesDataContext();

//Select all from the table
List<city> lst = (from u in data.City select u).ToList();

//add the table contents to the javascript array so that new locations will be loaded
foreach (City item in lst)
{
ScriptManager.RegisterArrayDeclaration(UpdatePanel1, "infoarray", "'" + item.C_ID.ToString() + "'");
ScriptManager.RegisterArrayDeclaration(UpdatePanel1, "lonarray", item.Longitude.ToString());
ScriptManager.RegisterArrayDeclaration(UpdatePanel1, "latarray", item.Latitude.ToString());
ScriptManager.RegisterArrayDeclaration(UpdatePanel1, "bounce", item.Bounce.ToString());
}
}

protected void Timer1_Tick(object sender, EventArgs e)
{

//update the update panel every 10 seconds
UpdatePanel1.Update();
}
}
}