diff --git a/Apps/Website/Controllers/BaseController.cs b/Apps/Website/Controllers/BaseController.cs
new file mode 100644
index 0000000..2afd701
--- /dev/null
+++ b/Apps/Website/Controllers/BaseController.cs
@@ -0,0 +1,14 @@
+using Microsoft.AspNetCore.Mvc;
+
+namespace Website.Controllers
+{
+  public abstract class BaseController : Controller
+  {
+    public const string FlashTextKey = "Flash.Text";
+
+    public void SetFlash(string message)
+    {
+      TempData[FlashTextKey] = message;
+    }
+  }
+}
\ No newline at end of file
diff --git a/Apps/Website/Controllers/LinksController.cs b/Apps/Website/Controllers/LinksController.cs
index 0bcb5a8..8fe0c98 100644
--- a/Apps/Website/Controllers/LinksController.cs
+++ b/Apps/Website/Controllers/LinksController.cs
@@ -5,7 +5,7 @@ using System.Threading.Tasks;
 
 namespace Website.Controllers
 {
-  public class LinksController : Controller
+  public class LinksController : BaseController
   {
     private readonly IMediator _bus;
 
@@ -35,6 +35,8 @@ namespace Website.Controllers
 
       await _bus.Send(command);
 
+      SetFlash("Link added!");
+
       return RedirectToAction(nameof(Index));
     }
   }
diff --git a/Apps/Website/Views/Shared/_FlashMessage.cshtml b/Apps/Website/Views/Shared/_FlashMessage.cshtml
new file mode 100644
index 0000000..6dc1157
--- /dev/null
+++ b/Apps/Website/Views/Shared/_FlashMessage.cshtml
@@ -0,0 +1,8 @@
+@{
+  var text = (string)TempData[Website.Controllers.BaseController.FlashTextKey];
+}
+
+@if (!string.IsNullOrWhiteSpace(text))
+{
+  <p class="message">@text</p>
+}
\ No newline at end of file
diff --git a/Apps/Website/Views/Shared/_Layout.cshtml b/Apps/Website/Views/Shared/_Layout.cshtml
index b602b71..bfe128b 100644
--- a/Apps/Website/Views/Shared/_Layout.cshtml
+++ b/Apps/Website/Views/Shared/_Layout.cshtml
@@ -32,6 +32,7 @@
         </nav>
     </header>
     <div class="container">
+        <partial name="_FlashMessage" />
         <main role="main" class="pb-3">
             @RenderBody()
         </main>
diff --git a/README.md b/README.md
index 4bcffb5..8bd7cee 100644
--- a/README.md
+++ b/README.md
@@ -19,6 +19,10 @@ Mise en place de la couche applicative avec `MediatR` et implémentation du prem
 
 ## Le site internet en MVC
 
+### Ajout des messages "flashs"
+
+Permet de notifier l'utilisateur d'une action. Utilisation des `TempData` (données supprimées à la prochaine requête ou après la lecture).
+
 ### Factoriser des éléments d'interface
 
 #### Partial views