From 6dcf07e90ea8954ff8d587201ab21690e67c3a26 Mon Sep 17 00:00:00 2001
From: Kevin Matsubara <kevin.matsubara@proton.me>
Date: Mon, 7 Apr 2025 13:26:10 +0200
Subject: [PATCH] Add example function inserting relational data objects.

---
 EntityFrameworkCore.Console/Program.cs | 58 ++++++++++++++++++++++++++
 1 file changed, 58 insertions(+)

diff --git a/EntityFrameworkCore.Console/Program.cs b/EntityFrameworkCore.Console/Program.cs
index 149b3e8..8052a50 100644
--- a/EntityFrameworkCore.Console/Program.cs
+++ b/EntityFrameworkCore.Console/Program.cs
@@ -15,6 +15,64 @@ context.Database.EnsureCreated();
 // Rather than raise: "System.InvalidOperationException: Sequence contains no elements."
 // var firstCoach = await context.Coaches.FirstOrDefaultAsync();
 
+async Task InsertRelatedData()
+{
+  // Insert record with a Foreign Key.
+  var match = new Match
+  {
+    AwayTeamId = 1,
+    HomeTeamId = 2,
+    AwayTeamScore = 0,
+    HomeTeamScore = 0,
+    Date = new DateTime(2025, 6, 1),
+    TicketPrice = 20
+  };
+
+  await context.AddAsync(match);
+  await context.SaveChangesAsync();
+
+  // Insert Parent/Child
+  var team = new Team
+  {
+    Name = "Neo Istanbul",
+    Coach = new Coach
+      {
+        Name = "Gimbal Wizbouski"
+      }
+  };
+
+  await context.AddAsync(team);
+  await context.SaveChangesAsync();
+
+  // Insert Parent with Children.
+  var league = new League
+  {
+    Name = "Star League",
+    Teams = new List<Team>
+    {
+      new Team
+      {
+        Name = "Neo Cairo",
+        Coach = new Coach
+          {
+            Name = "Damon Pulsar"
+          }
+      },
+      new Team
+      {
+        Name = "Cyborgs",
+        Coach = new Coach
+          {
+            Name = "C-1"
+          }
+      }
+    }
+  };
+
+  await context.AddAsync(league);
+  await context.SaveChangesAsync();
+}
+
 async Task ExecuteDelete(string name)
 {
   // var coaches = await context.Coaches.Where(c => c.Name == name).ToListAsync();