Add a layer in to asp map

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using AspMap;
using AspMap.Web;

public partial class WorldMapApp : System.Web.UI.Page
{

protected void Page_Load(object sender, System.EventArgs e)
{
AddMapLayers();
}

protected void AddMapLayers()
{
string LayerFolder = MapPath("MAPS/WORLD/");

map.AddLayer(LayerFolder + "earth.ecw");
map.AddLayer(LayerFolder + "world.shp");
map.AddLayer(LayerFolder + "lakes.shp");
map.AddLayer(LayerFolder + "capitals.shp");

AspMap.Layer layer;

// world
layer = map["world"];
layer.ShowLabels = true;
layer.LabelField = "CODE";
layer.LabelFont.Name = "Verdana";
layer.LabelFont.Size = 12;
layer.LabelStyle = LabelStyle.PolygonCenter;
layer.Opacity = 0.6;

// lakes
layer = map["lakes"];
layer.ShowLabels = true;
layer.LabelField = "NAME";
layer.LabelFont.Size = 10;
layer.LabelFont.Outline = true;
layer.Symbol.FillColor = Color.Blue;
layer.Symbol.LineColor = layer.Symbol.FillColor;
layer.LabelStyle = LabelStyle.PolygonCenter;

// capitals
layer = map["capitals"];
layer.ShowLabels = true;
layer.LabelField = "NAME";
layer.LabelFont.Bold = true;
layer.LabelFont.Size = 11;
layer.LabelFont.Outline = true;
layer.Symbol.PointStyle = PointStyle.CircleWithLargeCenter;
layer.Symbol.Size = 8;
layer.Symbol.FillColor = Color.White;
}


protected void map_InfoTool(object sender, AspMap.Web.InfoToolEventArgs e)
{
map.Callouts.Clear();

AspMap.Recordset records = map.Identify(e.InfoPoint, 5);

if (!records.EOF)
{
identifyGrid.DataSource = records;
identifyGrid.DataBind();
identifyGrid.Caption = records.Layer.Name.ToUpper();

Callout callout = map.Callouts.Add();
callout.X = e.InfoPoint.X;
callout.Y = e.InfoPoint.Y;
callout.Text = GetCalloutText(records);
callout.Font.Size = 16;
}
}

protected String GetCalloutText(AspMap.Recordset rs)
{
int index = rs.Fields.GetFieldIndex("NAME");
if (index < 0) index = rs.Fields.GetFieldIndex(rs.Layer.LabelField);
if (index < 0) index = 0;
return rs[index].ToString();
}

}