From cd1fa67960f6af1671064bb93aef86532d1697e4 Mon Sep 17 00:00:00 2001
From: Marcello Lamonaca <marcello.lamonaca@gmail.com>
Date: Sat, 8 May 2021 11:46:09 +0200
Subject: [PATCH] Add notes on DbContext Nullability

---
 .NET/Database/EntityFramework.md | 19 +++++++++----------
 1 file changed, 9 insertions(+), 10 deletions(-)

diff --git a/.NET/Database/EntityFramework.md b/.NET/Database/EntityFramework.md
index 9308482..a946b87 100644
--- a/.NET/Database/EntityFramework.md
+++ b/.NET/Database/EntityFramework.md
@@ -30,7 +30,8 @@ namespace <Project>.Model
 NuGet Packages to install:
 
 - `Microsoft.EntityFrameworkCore`
-- `Microsoft.EntityFrameworkCore.Tools` to use migrations
+- `Microsoft.EntityFrameworkCore.Tools` to use migrations in Visual Studio
+- `Microsoft.EntityFrameworkCore.Tools.DotNet` to use migrations in `dotnet` cli (`dotnet-ef`)
 - `Microsoft.EntityFrameworkCore.Design` *or* `Microsoft.EntityFrameworkCore.<db_provider>.Design` needed for tools to work (bundled w\ tools)
 - `Microsoft.EntityFrameworkCore.<db_provider>`
 
@@ -39,15 +40,6 @@ using Microsoft.EntityFrameworkCore;
 
 namespace <Project>.Model
 {
-    class Context : DbContext
-    {
-        public Context(DbContextOptions options) : base(options)
-        {
-        }
-    }
-
-    // or
-
     class Context : DbContext
     {
         private const string _connectionString = "Server=<server_name>;Database=<database>;UID=<user>;Pwd=<password>";
@@ -58,8 +50,15 @@ namespace <Project>.Model
             optionsBuilder.UseSqlServer(_connectionString);  // specify connection
         }
 
+        // or
+
+        public Context(DbContextOptions options) : base(options)
+        {
+        }
+
         //DBSet<TEntity> represents the collection of all entities in the context (or that can be queried from the database) of a given type
         public DbSet<Entity> Entities { get; set; }
+        public DbSet<Entity> Entities => Set<Entity>();  // with nullable reference types
     }
 }
 ```