/// <summary>
/// Simple example for AttachRange, SaveChanges will return 0
/// </summary>
/// <param name="items">Customers list</param>
/// <returns>true for SaveChanges returns 0</returns>
public static bool AttachCustomersRange(List <Customers> items)
{
using (var context = new NorthwindContext())
{
context.AttachRange(items);
var unChanged = items
.Select(customer => context.Entry(customer).State)
.All(entityState => entityState == EntityState.Unchanged);
return(context.SaveChanges() == 0 && unChanged);
}
}
