using System.Data.Entity;
public static void Main()
using (var context = new EntityContext())
context.BusinessCustomers.Add(new BusinessCustomer() { Name ="Customer_A", IsActive = false });
context.BusinessCustomers.Add(new BusinessCustomer() { Name ="Customer_B", IsActive = true });
context.BusinessCustomers.Add(new BusinessCustomer() { Name ="Customer_C", IsActive = false });
FiddleHelper.WriteTable("1 - Before", context.Customers);
using (var context = new EntityContext())
var customers = context.Customers.WhereBulkContains(new []{1});
customers.First().Name = "FirstCustomer";
using(var context = new EntityContext())
FiddleHelper.WriteTable("2 - After", context.Customers);
public class EntityContext : DbContext
public EntityContext() : base(FiddleHelper.GetConnectionStringSqlServer())
public DbSet<Customer> Customers { get; set; }
public DbSet<BusinessCustomer> BusinessCustomers { get; set; }
public int CustomerID { get; set; }
public string Name { get; set; }
public Boolean IsActive { get; set; }
public class BusinessCustomer : Customer