T0shik · imran-uk · Apr 12, 2022 · Apr 12, 2022
diff --git a/ServiceScope/Controllers/HomeController.cs b/ServiceScope/Controllers/HomeController.cs
@@ -5,9 +5,9 @@ namespace ServiceScope.Controllers
 {
     public class HomeController : Controller
     {
-        private ISingletonService _singleton;
-        private IScopedService _scoped;
-        private ITransientService _transient;
+        private readonly ISingletonService _singleton;
+        private readonly IScopedService _scoped;
+        private readonly ITransientService _transient;
 
         public HomeController(
             ISingletonService singleton,
@@ -19,9 +19,10 @@ public HomeController(
             _transient = transient;
         }
 
-        public IActionResult Index()
+        [Route("/")]
+        public IActionResult Singleton()
         {
-            return View("Index", _singleton.GetGuid());
+            return View("Singleton", _singleton.GetGuid());
         }
 
         public IActionResult Scoped()

diff --git a/ServiceScope/Program.cs b/ServiceScope/Program.cs
@@ -1,12 +1,5 @@
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Linq;
-using System.Threading.Tasks;
-using Microsoft.AspNetCore;
+using Microsoft.AspNetCore;
 using Microsoft.AspNetCore.Hosting;
-using Microsoft.Extensions.Configuration;
-using Microsoft.Extensions.Logging;
 
 namespace ServiceScope
 {

diff --git a/ServiceScope/Services/ScopedService.cs b/ServiceScope/Services/ScopedService.cs
@@ -6,7 +6,7 @@ public interface IScopedService : IService { }
 
     public class ScopedService : IScopedService
     {
-        private string _guid;
+        private readonly string _guid;
 
         public ScopedService()
         {

diff --git a/ServiceScope/Services/SingletonService.cs b/ServiceScope/Services/SingletonService.cs
@@ -6,7 +6,7 @@ public interface ISingletonService : IService { }
 
     public class SingletonService : ISingletonService
     {
-        private string _guid;
+        private readonly string _guid;
 
         public SingletonService()
         {

diff --git a/ServiceScope/Services/TransientService.cs b/ServiceScope/Services/TransientService.cs
@@ -6,7 +6,7 @@ public interface ITransientService : IService { }
 
     public class TransientService : ITransientService
     {
-        private string _guid;
+        private readonly string _guid;
 
         public TransientService()
         {

diff --git a/ServiceScope/Views/Home/Scoped.cshtml b/ServiceScope/Views/Home/Scoped.cshtml
@@ -1,13 +1,21 @@
 @model string
 
-<h1>Guid on page: @Model</h1>
+<div class="card">
+	<div class="card-header">
+		<h5>1st request to GetGuid() from Scoped service</h5>
+	</div>
+	<div class="card-body">
+		<code>@Model</code>
+	</div>
+</div>
 
 <partial name="_Scoped" />
 
-<p>
-    Useful for?
-</p>
-
-<ul>
-    <li>Persisting state throughtout application per request.</li>
-</ul>
+<div class="card">
+	<div class="card-header">
+		<h5>When to use Scoped lifetime</h5>
+	</div>
+	<ul class="list-group list-group-flush">
+		<li class="list-group-item">Persisting state through out application per request</li>
+	</ul>
+</div>
diff --git a/ServiceScope/Views/Home/Singleton.cshtml b/ServiceScope/Views/Home/Singleton.cshtml
@@ -0,0 +1,24 @@
+@model string
+
+<div class="card">
+	<div class="card-header">
+		<h5>1st request to GetGuid() from Singleton service</h5>
+	</div>
+	<div class="card-body">
+		<code>@Model</code>
+	</div>
+</div>
+
+<partial name="_Singleton" />
+
+<div class="card">
+	<div class="card-header">
+		<h5>When to use Singleton lifetime</h5>
+	</div>
+	<ul class="list-group list-group-flush">
+		<li class="list-group-item">Caching services</li>
+		<li class="list-group-item">Global configuration</li>
+		<li class="list-group-item">HttpClients <a target="_" href="https://medium.com/@@nuno.caneco/c-httpclient-should-not-be-disposed-or-should-it-45d2a8f568bc">(reason why)</a></li>
+		<li class="list-group-item">Persisting state that's useful for the runtime of the application</li>
+	</ul>
+</div>
diff --git a/ServiceScope/Views/Home/Transient.cshtml b/ServiceScope/Views/Home/Transient.cshtml
@@ -1,15 +1,24 @@
 @model string
 
-<h1>Guid on page: @Model</h1>
+<div class="card">
+	<div class="card-header">
+		<h5>1st request to GetGuid() from Transient service</h5>
+	</div>
+	<div class="card-body">
+		<code>@Model</code>
+	</div>
+</div>
 
 <partial name="_Transient" />
-<p>
-    Useful for?
-</p>
 
-<ul>
-    <li>Database Access</li>
-    <li>File Access</li>
-    <li>Services that should dispose of their state</li>
-    <li>When you need a fresh instance of an object every single time</li>
-</ul>
+<div class="card">
+	<div class="card-header">
+		<h5>When to use Transient lifetime</h5>
+	</div>
+    <ul class="list-group list-group-flush">
+	    <li class="list-group-item">Database connections</li>
+	    <li class="list-group-item">File handles</li>
+		<li class="list-group-item">Services that should dispose of their state</li>
+		<li class="list-group-item">When you need a fresh instance of an object each time</li>
+    </ul>
+</div>
diff --git a/ServiceScope/Views/Shared/_Layout.cshtml b/ServiceScope/Views/Shared/_Layout.cshtml
@@ -1,18 +1,22 @@
 <!DOCTYPE html>
 
-<html>
+<html lang="en">
 <head>
-    <meta name="viewport" content="width=device-width" />
-    <title>@ViewBag.Title</title>
+	<meta name="viewport" content="width=device-width" />
+	<title>@ViewBag.Title</title>
+	<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-1BmE4kWBq78iYhFldvKuhfTAU6auU8tT94WrHftjDbrCEXSU1oBoqyl2QvZ6jIW3" crossorigin="anonymous">
 </head>
+
 <body>
-    <div>
-        <a asp-controller="Home" asp-action="Index">Singleton</a>
-        <a asp-controller="Home" asp-action="Scoped">Scoped</a>
-        <a asp-controller="Home" asp-action="Transient">Transient</a>
-    </div>
-    <div>
-        @RenderBody()
-    </div>
+<div class="container">
+
+	<div class="btn-group">
+		<a asp-controller="Home" asp-action="Singleton" class="btn btn-primary">Singleton</a>
+		<a asp-controller="Home" asp-action="Scoped" class="btn btn-primary">Scoped</a>
+		<a asp-controller="Home" asp-action="Transient" class="btn btn-primary">Transient</a>
+	</div>
+
+	@RenderBody()
+</div>
 </body>
-</html>
+</html>
diff --git a/ServiceScope/Views/Shared/_Scoped.cshtml b/ServiceScope/Views/Shared/_Scoped.cshtml
@@ -1,3 +1,10 @@
 @inject IScopedService Scoped
 
-<h2>From pratial: @Scoped.GetGuid()</h2>
+<div class="card">
+	<div class="card-header">
+		<h5>2nd request to GetGuid() from Scoped service</h5>
+	</div>
+	<div class="card-body">
+		<code>@Scoped.GetGuid()</code>
+	</div>
+</div>
diff --git a/ServiceScope/Views/Shared/_Singleton.cshtml b/ServiceScope/Views/Shared/_Singleton.cshtml
@@ -1,3 +1,10 @@
 @inject ISingletonService Singleton
 
-<h2>From pratial: @Singleton.GetGuid()</h2>
+<div class="card">
+	<div class="card-header">
+		<h5>2nd request to GetGuid() from Singleton service</h5>
+	</div>
+	<div class="card-body">
+		<code>@Singleton.GetGuid()</code>
+	</div>
+</div>
diff --git a/ServiceScope/Views/Shared/_Transient.cshtml b/ServiceScope/Views/Shared/_Transient.cshtml
@@ -1,3 +1,10 @@
 @inject ITransientService Transient
 
-<h2>From pratial: @Transient.GetGuid()</h2>
+<div class="card">
+	<div class="card-header">
+		<h5>2nd request to GetGuid() from Transient service</h5>
+	</div>
+	<div class="card-body">
+		<code>@Transient.GetGuid()</code>
+	</div>
+</div>