diff --git a/Sources/BookApp.sln b/Sources/BookApp.sln
index a312494..24acfb1 100644
--- a/Sources/BookApp.sln
+++ b/Sources/BookApp.sln
@@ -19,9 +19,11 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Utils", "Utils\Utils.csproj
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Stub", "Stub\Stub.csproj", "{14ED7ADF-7B83-432E-A87B-40C153041067}"
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "TestFrontEnd", "Tests\TestFrontEnd.csproj", "{945A6DB3-CB0A-4FB8-8117-64F0CB0D838A}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Tests", "Tests\Tests.csproj", "{945A6DB3-CB0A-4FB8-8117-64F0CB0D838A}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "VMWrapper", "VMWrapper\VMWrapper.csproj", "{377DC5AB-5D7C-4A29-ACED-C08B581A8E58}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "VMWrapper", "VMWrapper\VMWrapper.csproj", "{377DC5AB-5D7C-4A29-ACED-C08B581A8E58}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ToolKit", "ToolKit\ToolKit.csproj", "{778541B9-BECF-49DC-8860-B8F134A6F4E2}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -71,6 +73,10 @@ Global
 		{377DC5AB-5D7C-4A29-ACED-C08B581A8E58}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{377DC5AB-5D7C-4A29-ACED-C08B581A8E58}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{377DC5AB-5D7C-4A29-ACED-C08B581A8E58}.Release|Any CPU.Build.0 = Release|Any CPU
+		{778541B9-BECF-49DC-8860-B8F134A6F4E2}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{778541B9-BECF-49DC-8860-B8F134A6F4E2}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{778541B9-BECF-49DC-8860-B8F134A6F4E2}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{778541B9-BECF-49DC-8860-B8F134A6F4E2}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
diff --git a/Sources/BookApp/Composants/CollectionFiltrage.xaml b/Sources/BookApp/Composants/CollectionFiltrage.xaml
index 9c62a76..4daadf9 100644
--- a/Sources/BookApp/Composants/CollectionFiltrage.xaml
+++ b/Sources/BookApp/Composants/CollectionFiltrage.xaml
@@ -4,7 +4,7 @@
              xmlns:toolkit="http://schemas.microsoft.com/dotnet/2022/maui/toolkit"
              xmlns:vm="clr-namespace:BookApp.ViewModel"
              xmlns:model="clr-namespace:Model;assembly=Model"
-             x:DataType="vm:TousViewModel"
+             x:DataType="vm:ViewModelManager"
              x:Class="BookApp.Composants.CollectionFiltrage">
     <CollectionView ItemsSource="{Binding Authors}">
         <CollectionView.ItemTemplate>
diff --git a/Sources/BookApp/Composants/CollectionFiltrage.xaml.cs b/Sources/BookApp/Composants/CollectionFiltrage.xaml.cs
index 90d1008..8f39ed4 100644
--- a/Sources/BookApp/Composants/CollectionFiltrage.xaml.cs
+++ b/Sources/BookApp/Composants/CollectionFiltrage.xaml.cs
@@ -19,7 +19,7 @@ public partial class CollectionFiltrage : ContentView
 
     public ObservableCollection<ObjetTemp> MyCollections1 { get; set; }*/
 
-    public CollectionFiltrage(TousViewModel data)
+    public CollectionFiltrage(ViewModelManager data)
     {
         InitializeComponent();
         
diff --git a/Sources/BookApp/MauiProgram.cs b/Sources/BookApp/MauiProgram.cs
index d31faa2..c61dd7d 100644
--- a/Sources/BookApp/MauiProgram.cs
+++ b/Sources/BookApp/MauiProgram.cs
@@ -30,9 +30,10 @@ namespace BookApp
 #endif
             builder.Services.AddSingleton<ILibraryManager, LibraryStub>();
             builder.Services.AddSingleton<BookViewModel>();
-            builder.Services.AddSingleton<TousViewModel>();
+            builder.Services.AddSingleton<ViewModel.ViewModelManager>();
             builder.Services.AddSingleton<Filtrage>();
             builder.Services.AddSingleton<CollectionFiltrage>();
+           
 
             // transient pour recharger la data à l'execute
 
diff --git a/Sources/BookApp/Pages/Filtrage.xaml b/Sources/BookApp/Pages/Filtrage.xaml
index 6ad91e7..f6030de 100644
--- a/Sources/BookApp/Pages/Filtrage.xaml
+++ b/Sources/BookApp/Pages/Filtrage.xaml
@@ -4,9 +4,9 @@
 	xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
     xmlns:toolkit="http://schemas.microsoft.com/dotnet/2022/maui/toolkit"
     xmlns:composants="clr-namespace:BookApp.Composants"
-    xmlns:vm="clr-namespace:BookApp.ViewModel"
     xmlns:model="clr-namespace:Model;assembly=Model"
-    x:DataType="vm:TousViewModel"
+    xmlns:vmw="clr-namespace:VMWrapper;assembly=VMWrapper"
+    x:DataType="vmw:BookViewModel"
     x:Class="BookApp.Pages.Filtrage">
     <Shell.BackButtonBehavior>
         <BackButtonBehavior IsVisible="False" IsEnabled="False"/>
@@ -66,8 +66,7 @@
         <StackLayout>
             <Rectangle HeightRequest="1" BackgroundColor="LightGray"/>
             <SearchBar Placeholder="Search items..."/>
-            <Rectangle HeightRequest="1" BackgroundColor="LightGray"/>
-            <CollectionView ItemsSource="{Binding Authors}" VerticalOptions="FillAndExpand">
+            <CollectionView ItemsSource="{Binding authorList}" VerticalOptions="FillAndExpand">
                 <CollectionView.ItemTemplate>
                     <DataTemplate x:DataType="model:Author">
                         <StackLayout Padding="5">
diff --git a/Sources/BookApp/Pages/Filtrage.xaml.cs b/Sources/BookApp/Pages/Filtrage.xaml.cs
index f05d8bd..ae9a253 100644
--- a/Sources/BookApp/Pages/Filtrage.xaml.cs
+++ b/Sources/BookApp/Pages/Filtrage.xaml.cs
@@ -1,12 +1,13 @@
 using BookApp.ViewModel;
-
+using VMWrapper;
+
 namespace BookApp.Pages
 {
     public partial class Filtrage : ContentPage
     {
         SearchBar searchBar = new SearchBar { Placeholder = "Search items..." };
 
-        public Filtrage(TousViewModel data)
+        public Filtrage(BookViewModel data)
         {
             InitializeComponent();
             BindingContext= data;
diff --git a/Sources/BookApp/ViewModel/TousViewModel.cs b/Sources/BookApp/ViewModel/ViewModelManager.cs
similarity index 81%
rename from Sources/BookApp/ViewModel/TousViewModel.cs
rename to Sources/BookApp/ViewModel/ViewModelManager.cs
index e0648bd..519e513 100644
--- a/Sources/BookApp/ViewModel/TousViewModel.cs
+++ b/Sources/BookApp/ViewModel/ViewModelManager.cs
@@ -7,7 +7,7 @@ namespace BookApp.ViewModel;
 
 
 
-public class TousViewModel
+public class ViewModelManager
 {
         
     BookViewModel _viewModel;
@@ -16,11 +16,11 @@ public class TousViewModel
     /* public ObservableCollection<AuteurGroup> AuteurGroups { get; private set; } =
          new ObservableCollection<AuteurGroup>();*/
 
-    public TousViewModel(BookViewModel viewModel)
+    public ViewModelManager(BookViewModel viewModel)
     {
        
         _viewModel = viewModel;
-        GetAuthors();
+        //GetAuthors();
         /* ObservableCollection<Auteur> auteurs = new Stub().CreateStubData();
          foreach (Auteur auteur in auteurs)
          {
@@ -29,16 +29,16 @@ public class TousViewModel
     }
 
     //fireandforget
-    public async void GetAuthors()
+    /*public async void GetAuthors()
     {
         
-        var authors1 = await _viewModel.GetAuthor();
+        var authors1 = await _viewModel.GetAuthors();
         Authors.Clear();
         foreach (var author in authors1)
         {
             Authors.Add(author);
         }
-    }
+    }*/
 }
 
 /*public class AuteurGroup : ObservableCollection<Book>
diff --git a/Sources/BookApp/ViewModel/ViewModelNavigation.cs b/Sources/BookApp/ViewModel/ViewModelNavigation.cs
new file mode 100644
index 0000000..ade41dc
--- /dev/null
+++ b/Sources/BookApp/ViewModel/ViewModelNavigation.cs
@@ -0,0 +1,12 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BookApp.ViewModel
+{
+    internal class ViewModelNavigation
+    {
+    }
+}
diff --git a/Sources/Tests/TestFrontEnd.csproj b/Sources/Tests/Tests.csproj
similarity index 86%
rename from Sources/Tests/TestFrontEnd.csproj
rename to Sources/Tests/Tests.csproj
index 585e254..abb2b97 100644
--- a/Sources/Tests/TestFrontEnd.csproj
+++ b/Sources/Tests/Tests.csproj
@@ -21,4 +21,9 @@
     <PackageReference Include="System.Linq" Version="4.3.0" />
   </ItemGroup>
 
+  <ItemGroup>
+    <ProjectReference Include="..\Model\Model.csproj" />
+    <ProjectReference Include="..\Stub\Stub.csproj" />
+  </ItemGroup>
+
 </Project>
diff --git a/Sources/ToolKit/Class1.cs b/Sources/ToolKit/Class1.cs
new file mode 100644
index 0000000..bc64cba
--- /dev/null
+++ b/Sources/ToolKit/Class1.cs
@@ -0,0 +1,7 @@
+namespace ToolKit
+{
+    public class Class1
+    {
+
+    }
+}
\ No newline at end of file
diff --git a/Sources/ToolKit/ToolKit.csproj b/Sources/ToolKit/ToolKit.csproj
new file mode 100644
index 0000000..4658cbf
--- /dev/null
+++ b/Sources/ToolKit/ToolKit.csproj
@@ -0,0 +1,9 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net7.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>
diff --git a/Sources/VMWrapper/BookViewModel.cs b/Sources/VMWrapper/BookViewModel.cs
index 1806598..a52e25d 100644
--- a/Sources/VMWrapper/BookViewModel.cs
+++ b/Sources/VMWrapper/BookViewModel.cs
@@ -1,32 +1,88 @@
 using Model;
 using System;
 using System.Collections.ObjectModel;
+using System.ComponentModel;
+using System.Runtime.CompilerServices;
 using System.Xml.Linq;
 
 namespace VMWrapper
 {
     // All the code in this file is included in all platforms.
-    public class BookViewModel
+    public class BookViewModel : INotifyPropertyChanged
     {
         ILibraryManager data;
 
-        ObservableCollection<Author> authorList;
 
-        public BookViewModel(ILibraryManager data)
+        public ObservableCollection<Author> authorList { get; private set; } = new ObservableCollection<Author>();
+        public ObservableCollection<Book> bookList { get; private set; } = new ObservableCollection<Book>();
+        public ObservableCollection<AuteurGroup> AuteurGroups { get; private set; } = new ObservableCollection<AuteurGroup>();
+        public event PropertyChangedEventHandler PropertyChanged;
+
+        public BookViewModel(ILibraryManager data) 
         {
             this.data = data;
+            GetAuthors();
+        }
+
+     
+
+        protected virtual void OnPropertyChanged([CallerMemberName] string propertyName = null)
+        {
+            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
+        }
+
+        public class AuteurGroup : ObservableCollection<Book>
+        {
+            public string Name { get; private set; }
+
+            public AuteurGroup(string name, ObservableCollection<Book> books): base(books)
+            {
+                Name = name;
+            }
+        }
+
+        public void GetBooks()
+        {
+            var objet = data.GetBooksByAuthor("", 0, 8);
+            var ojb = objet.Result.Item2;
+
+            /*foreach (Book Book in ojb)
+            {
+                AuteurGroups.Add(new AuteurGroup(Book.Authors.Name, auteur.Books));
+            }
+
+            ObservableCollection<Auteur> auteurs = new Stub().CreateStubData();
+            foreach (Auteur auteur in auteurs)
+            {
+                AuteurGroups.Add(new AuteurGroup(auteur.Name, auteur.Books));
+            }
+            */
+
         }
 
-        public async Task<ObservableCollection<Author>> GetAuthor()
+
+        public void GetAuthors()
         {
-            var objet =  await data.GetAuthorsByName("",0,10);
+            var objet =  data.GetAuthorsByName("",0,10);
+            var ojb = objet.Result.Item2;
+
+            authorList.Clear();
+            foreach (var author in ojb)
+            {
+                authorList.Add(author);
+            }
+        }
+
+ 
+
+        public async Task<ObservableCollection<Book>> GetBooksByTitle()
+        {
+            var objet = await data.GetBooksByTitle("", 0, 9);
             var ojb = objet.Item2;
-         
-            return new ObservableCollection<Author>(ojb);
-            
 
+            return new ObservableCollection<Book>(ojb);
         }
 
-   
+
     }
 }
\ No newline at end of file