EF Classic - Attach - EntityState (EF Core)

CSharp · Console

/Program.cs

 // @nuget: Z.EntityFramework.Classic

using System;
using System.Linq;
using System.Data.Entity;

public class Program
{
	public static void Main()
	{
		var customer = new Customer() { Name ="Customer_A", Description = "Description", IsActive = true, LastLogin = new DateTime(2010,1,1) };
		
		GenerateData(customer);

		
		using (var context = new EntityContext())
		{
			context.Customers.Attach(customer, EntityState.Deleted);
			context.SaveChanges();
			
			FiddleHelper.WriteTable("Customers", context.Customers.ToList());			
		}
	}
		 
	public static void GenerateData(Customer customer)
	{
		
		using (var context = new EntityContext())
		{
			context.Customers.Add(customer);
			context.Customers.Add(new Customer() { Name ="Customer_B", Description = "Description", IsActive = true, LastLogin = new DateTime(2010,1,1) });			
			context.Customers.Add(new Customer() { Name ="Customer_C", Description = "Description", IsActive = true, LastLogin = DateTime.Now });
			
			context.SaveChanges();	
		}
	}

	public class EntityContext : DbContext
	{
		public EntityContext() : base(FiddleHelper.GetConnectionStringSqlServer())
		{

		}
		
		public DbSet<Customer> Customers { get; set; }
	}
	
	
	public class Customer
	{
		public int CustomerID { get; set; }
		public string Name { get; set; }
		public string Description { get; set; }
		public DateTime LastLogin { get; set; }
		public Boolean IsActive { get; set; }
	}
}