Add insert example.

EntityFrameworkCore.Console/Program.cs

@@ -13,7 +13,16 @@ using var context = new DeadBallZoneLeagueDbContext();
 // Rather than raise: "System.InvalidOperationException: Sequence contains no elements."
 // var firstCoach = await context.Coaches.FirstOrDefaultAsync();
 
+async Task InsertCoach(string name)
+{
+  var coach = new Coach { Name = name, CreatedDate = DateTime.UtcNow };
+  await context.Coaches.AddAsync(coach);
+  Console.WriteLine(context.ChangeTracker.DebugView.LongView);
+  await context.SaveChangesAsync();
 
+  // If you have a list, you can use a batch insert, instead of a loop:
+  // await context.Coaches.AddRangeAsync(coaches);
+}
 
 async Task ListVSIQueryableCall()
 {