Is this an example of LINQ-to-SQL?
- by Edward Tanguay
I made a little WPF application with a SQL CE database.
I built the following code with LINQ to get data out of the database, which was surprisingly easy. So I thought "this must be LINQ-to-SQL".
Then I did "add item" and added a "LINQ-to-SQL classes" .dbml file, dragged my table onto the Object Relational Designer but it said, "The selected object uses an unsupported data provider."
So then I questioned whether or not the following code actually is LINQ-to-SQL, since it indeed allows me to access data from my SQL CE database file, yet officially "LINQ-to-SQL" seems to be unsupported for SQL CE.
So is the following "LINQ-to-SQL" or not?
using System.Linq;
using System.Data.Linq;
using System.Data.Linq.Mapping;
using System.Windows;
namespace TestLinq22
{
public partial class Window1 : Window
{
public Window1()
{
InitializeComponent();
MainDB db = new MainDB(@"Data Source=App_Data\Main.sdf");
var customers = from c in db.Customers
select new {c.FirstName, c.LastName};
TheListBox.ItemsSource = customers;
}
}
[Database(Name = "MainDB")]
public class MainDB : DataContext
{
public MainDB(string connection) : base(connection) { }
public Table<Customers> Customers;
}
[Table(Name = "Customers")]
public class Customers
{
[Column(DbType = "varchar(100)")]
public string FirstName;
[Column(DbType = "varchar(100)")]
public string LastName;
}
}
