Esiste un database esistente denominato Northwind con un'applicazione Webform. durante l'esecuzione dell'applicazione genera un errore: 'nome colonna non valido CategoriaCategoryID'. qualcuno mi aiuti ?. grazie in anticipo !!Nome prima colonna non valido Nome EF "CategoriaCategoryID"
Category.cs:
public class Category
{
public int CategoryID { get; set; }
// public int ID { get; set; }
public string CategoryName { get; set; }
public string Description { get; set; }
public byte[] Picture { get; set; }
public virtual ICollection<Product> Products { get; set; }
}
Product.cs:
public class Product
{
public int ProductID { get; set; }
//public int ID { get; set; }
public string ProductName { get; set; }
public Decimal? UnitPrice { get; set; }
public bool Discontinued{ get; set; }
public virtual Category Category{ get; set; }
}
Northwind.cs
public class Northwind: DbContext
{
public DbSet<Product> Products { get; set; }
public DbSet<Category> Categorys{ get; set; }
}
Products.aspx
protected void Page_Load(object sender, EventArgs e)
{
Northwind northwind = new Northwind();
var products = from p in northwind.Products
where p.Discontinued == false
select p;
GridView1.DataSource = products.ToList();
GridView1.DataBind();
}
perché si commenta Id? probabilmente lo schema mis match – paragy