part 3 models

[bostoncl21]

in models i get the following

c" cartmodels.cs
c" productmodel.cs
c" producttypemodel.cs

below u can see
GarageEntities db = new GarageEntities();
and this is always coming up red underlined in all 3 models above

i am new to this can anyone help me please?

thanks bostoncl21.

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

/// <summary>
/// Summary description for Cartmodel
/// </summary>
public class Cartmodel
{
public string InsertCart(Cart cart)
{
try
{
GarageEntities db = new GarageEntities();
db.Carts.Add(cart);
db.SaveChanges();

return cart.DatePurchased + "was succesfully inserted";
}
catch (Exception e)
{
return "Error:" + e;
}
}

public string UpdateCart(int id, Cart cart)
{
try
{
GarageEntities db = new GarageEntities();

//Fetch object from db
Cart p = db.Cart.Find(id);

p.DatePurchased = cart.DatePurchased;
p.ClientID = cart.ClientID;
p.Amount = cart.Amount;
p.IsInCart = cart.IsInCart;
p.ProductID = cart.ProductID;

db.SaveChanges();
return cart.DatePurchased + "was succesfully updated";

}
catch (Exception e)
{
return "Error:" + e;
}
}

public string DeleteCart(int id)
{
try
{
GarageEntities db = new GarageEntities();
Cart cart = db.Carts.Find(id);

db.Carts.Attach(cart);
db.Carts.Remove(cart);
db.SaveChanges();

return cart.DatePurchased + "was succesfully deleted";
}
catch (Exception e)
{
return "Error:" + e;
}
}
}