Question

Let’s say that I have tree tables User, Product and UserProduct.

A user can have many products, and a product can be assigned to many users.

I want to retrive all the users product with linq. I created this method in the User.cs class :

    public List<Product> GetProductList()
    {
        List<Product> listProduct = new List<Product>();
        List<UserProduct> listUserProduct = this.UserProdutcs.ToList();

        foreach (var item in listUserProduct )
        {
            listProduct.Add(item.Product);
        }

        return listProduct; 
    }

I want to know if there is a better way of doing so ?

Answer 1

You could use LINQ and project into an anonymous type:

var newList = (from products in listProduct
           join uProducts in listUserProduct on products.id equals uProducts.productId
           select new {
                ProductDescription = products.Description,
                ProductAttribute = products.YourAttributes,
                ProductUserProductAttribute = uProducts.YourAttribute
           }).ToList();