From 915694b3feb366da70e20051eceaaeea7b7626f7 Mon Sep 17 00:00:00 2001
From: Rick Anderson <3605364+Rick-Anderson@users.noreply.github.com>
Date: Fri, 19 Nov 2021 08:40:17 -1000
Subject: [PATCH] fix sample (#23990)

---
 .../fundamentals/dependency-injection.md      |  2 +-
 .../6.x/DIsample2/DIsample2/Program.cs        | 33 ++++++++++++++++++-
 2 files changed, 33 insertions(+), 2 deletions(-)

diff --git a/aspnetcore/fundamentals/dependency-injection.md b/aspnetcore/fundamentals/dependency-injection.md
index 0c45cbb258..22ebe5ecae 100644
--- a/aspnetcore/fundamentals/dependency-injection.md
+++ b/aspnetcore/fundamentals/dependency-injection.md
@@ -249,7 +249,7 @@ Service1.Dispose
 
 Consider the following code:
 
-[!code-csharp[](dependency-injection/samples/6.x/DIsample2/DIsample2/Program.cs?name=snippet2)]
+[!code-csharp[](dependency-injection/samples/6.x/DIsample2/DIsample2/Program.cs?name=snippet3)]
 
 In the preceding code:
 
diff --git a/aspnetcore/fundamentals/dependency-injection/samples/6.x/DIsample2/DIsample2/Program.cs b/aspnetcore/fundamentals/dependency-injection/samples/6.x/DIsample2/DIsample2/Program.cs
index 0247a619dd..c52f0e6d52 100644
--- a/aspnetcore/fundamentals/dependency-injection/samples/6.x/DIsample2/DIsample2/Program.cs
+++ b/aspnetcore/fundamentals/dependency-injection/samples/6.x/DIsample2/DIsample2/Program.cs
@@ -1,4 +1,4 @@
-#define SECOND // FIRST SECOND 
+#define THRD // FIRST SECOND THRD
 #if FIRST
 #region snippet
 using DIsample2.Services;
@@ -61,5 +61,36 @@ app.UseAuthorization();
 
 app.MapRazorPages();
 
+app.Run();
+#elif THRD
+using DIsample2.Services;
+#region snippet3
+var builder = WebApplication.CreateBuilder(args);
+
+builder.Services.AddRazorPages();
+
+builder.Services.AddSingleton(new Service1());
+builder.Services.AddSingleton(new Service2());
+#endregion
+
+var myKey = builder.Configuration["MyKey"];
+builder.Services.AddSingleton<IService3>(sp => new Service3(myKey));
+
+var app = builder.Build();
+if (!app.Environment.IsDevelopment())
+{
+     app.UseExceptionHandler("/Error");
+    app.UseHsts();
+}
+
+app.UseHttpsRedirection();
+app.UseStaticFiles();
+
+app.UseRouting();
+
+app.UseAuthorization();
+
+app.MapRazorPages();
+
 app.Run();
 #endif