initial upload

Models/dbcontext.cs

@@ -0,0 +1,58 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Metadata;
+
+namespace SimpleModelsAndRelations.Models
+{
+    public class User
+    {
+        public int Id { get; set; }
+        public string Name { get; set; }
+        public List<Order> Orders { get; set; }
+    }
+    public class Order
+    {
+        public int Id { get; set; }
+        public DateTime Date { get; set; }
+        public int UserId { get; set; }
+        public User User { get; set; }
+        public List<Order_Product> Order_Product { get; set; }
+
+    }
+
+    // TODO 3: complete the implementation below (1 pts) 
+    public class Order_Product
+    {
+        public int Quantity { get; set; }
+        public int ProductId { get; set; }
+        public Product Product { get; set; }
+        public int OrderId { get; set; }
+        public Order Order { get; set; }
+    }
+    public class Product
+    {
+        public int Id { get; set; }
+        public string Name { get; set; }
+        public float Price { get; set; }
+        public List<Order_Product> Order_Product { get; set; }
+    }
+    public partial class SimpleModelsAndRelationsContext : DbContext
+    {
+        // TODO 1: complete the implementation below (1 pt) 
+        public DbSet<User> Users { get; set; }
+        public DbSet<Order> Orders { get; set; }
+        public DbSet<Product> Products { get; set; }
+        public DbSet<Order_Product> Order_Products { get; set; }
+      
+        public SimpleModelsAndRelationsContext(DbContextOptions<SimpleModelsAndRelationsContext> options) : base(options) { }
+        
+        protected override void OnModelCreating(ModelBuilder modelBuilder)
+        {
+            // TODO 2: complete the implementation below (0.5 pts)
+            modelBuilder.Entity<Order_Product>().HasKey(_op => new { _op.ProductId, _op.OrderId });
+        }
+    }
+}