Loading 3D Model XNA snippet

GameMain.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Input;

public class GameMain : Microsoft.Xna.Framework.Game {
    GraphicsDeviceManager graphics;
    Camera camera;
    Model robot;
    public GameMain() {
    graphics = new GraphicsDeviceManager(this);
}
protected override void Initialize() {
    graphics.PreferredBackBufferHeight = 450;
    graphics.PreferredBackBufferWidth = 450;
    graphics.ApplyChanges();
    camera = new Camera();
    Content.RootDirectory = "Content";
    base.Initialize();
}
protected override void LoadContent() {
    robot = Content.Load<Model>("Robot");
}
protected override void Update(GameTime gameTime) {
    KeyboardState keys = Keyboard.GetState();
    if (keys.IsKeyDown(Keys.Escape))
    this.Exit();
    camera.Update(gameTime);
    base.Update(gameTime);
}
protected override void Draw(GameTime gameTime) {
    graphics.GraphicsDevice.Clear(Color.CornflowerBlue);
    graphics.GraphicsDevice.VertexDeclaration = new VertexDeclaration(
    graphics.GraphicsDevice, VertexPositionColor.VertexElements);
    foreach (BasicEffect effect in robot.Meshes["Robot"].Effects) {
        effect.EnableDefaultLighting();
        effect.EmissiveColor = Color.White.ToVector3();
        effect.View = camera.View;
        effect.Projection = camera.Projection;
        effect.World = robot.Bones["Robot"].Transform * camera.World;
    }

    robot.Meshes["Robot"].Draw();
    base.Draw(gameTime);
    }
}