Stuck on chapter 2: HttpContext in a class library

sethxdeath · April 26th, 2012, 11:31 AM

As instructed by the book, I have included the reference to System.Web in the directives of my ProductService class:

Code:

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

namespace ASPPatterns.Chap2.Service
{
    public class ProductService
    {
        private ProductRepository _productRepository;

        public ProductService()
        {
            _productRepository = new ProductRepository();
        }

        public IList<Product> GetAllProductsIn(int categoryId)
        {
            IList<Product> products;
            string storageKey = string.Format("products_in_category_id_{0}", categoryId);

            products = (List<Product>)System.Web.HttpContext.Current.Cache.Get(storageKey);

            if (products == null)
            {
                products = _productRepository.GetAllProductsIn(categoryId);
                HttpContext.Current.Cache.Insert(storageKey, products);
            }
        }
    }
}

But the errors I'm getting are:

Code:

Error	1	The type or namespace name 'HttpContext' does not exist in the namespace 'System.Web' (are you missing an assembly reference?)

and

Code:

Error	2	The name 'HttpContext' does not exist in the current context

Can anyone explain how I'm supposed to get the HttpContext class to work inside of a class library?

Thanks!

elbandit · April 26th, 2012, 11:52 AM

Hi sethxdeath,

Thanks for buying the book!

You will need to add a reference to the System.Web assembly. Right click on the project and 'Add Reference...', select the .Net tab and then add System.Web from the list.

Cheers
Scott

sethxdeath · April 26th, 2012, 12:04 PM

Oh, boy, how embarrassingly silly of me. Thanks so much hahaha