EF - Specified Type Not Supported

CSharp · Console

/Program.cs

// @nuget: EntityFramework
// @nuget: Z.EntityFramework.Extensions

using System;
using System.Data.Entity;
using System.Linq;
using System.Collections.Generic;
					
public class Program
{
	public static void Main()
	{
		// Insert data
		using (var context = new EntityContext())
		{
			context.BulkInsert(CustomerData());
			context.BulkInsert(InvoiceData());
		}
		
		using (var context = new EntityContext())
		{
			
			var fromDate = DateTime.Now.AddDays(-7).Date;

    		var customer = context.Customers.Where(c => c.CustomerID == 1)
        		.Include(c => c.Invoices)
        		.Where(c => c.Invoices.Any(i => i.InvoiceDate.Date >= fromDate))
        		.FirstOrDefault();
			
			FiddleHelper.WriteTable(customer.Invoices);
		}

	}
	
	public static List<Customer> CustomerData() 
	{
		List<Customer>  list = new List<Customer>()
		{
			new Customer() { Name ="Customer_1"},
			new Customer() { Name ="Customer_2"},
			new Customer() { Name ="Customer_3"}
		};
		
		return list;
	}
	
	public static List<Invoice> InvoiceData()
	{
		List<Invoice> list = new List<Invoice>()
		{
			new Invoice() { InvoiceDate = new DateTime(2018,1,5), CustomerID = 1},
			new Invoice() { InvoiceDate = new DateTime(2018,5,3), CustomerID = 1},
			new Invoice() { InvoiceDate = DateTime.Now.AddDays(-5), CustomerID = 1},
			new Invoice() { InvoiceDate = DateTime.Now.AddDays(-3), CustomerID = 1},
			new Invoice() { InvoiceDate = new DateTime(2018,4,15), CustomerID = 2},
			new Invoice() { InvoiceDate = new DateTime(2018,2,20), CustomerID = 3},
			new Invoice() { InvoiceDate = new DateTime(2018,5,22), CustomerID = 3},
			new Invoice() { InvoiceDate = new DateTime(2018,5,23), CustomerID = 3}
		};
	
		return list;
	}

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

		}
		
		public DbSet<Customer> Customers { get; set; }
		public DbSet<Invoice> Invoices { get; set; }
	}
	
	
	public class Customer
	{
		public int CustomerID { get; set; }
		public string Name { get; set; }
		public List<Invoice> Invoices { get; set; }
	}
	
	public class Invoice
	{
		public int InvoiceID { get; set; }
		public DateTime InvoiceDate { get; set; }
		public int CustomerID { get; set; }
    	public Customer Customer { get; set; }
	}
}