diff --git a/Sources/BookApp/Composants/CollectionFiltrage.xaml b/Sources/BookApp/Composants/CollectionFiltrage.xaml
index 62bb13b..9da0797 100644
--- a/Sources/BookApp/Composants/CollectionFiltrage.xaml
+++ b/Sources/BookApp/Composants/CollectionFiltrage.xaml
@@ -6,7 +6,7 @@
              xmlns:model="clr-namespace:Model;assembly=Model"
              x:DataType="vm:ViewModelManager"
              x:Class="BookApp.Composants.CollectionFiltrage">
-    <CollectionView ItemsSource="{Binding bookViewModel.authorList}">
+    <CollectionView ItemsSource="{Binding VMMrg.bookVm.authorList}">
         <CollectionView.ItemTemplate>
             <DataTemplate x:DataType="model:Author">
                 <StackLayout Padding="5">
diff --git a/Sources/BookApp/MauiProgram.cs b/Sources/BookApp/MauiProgram.cs
index 7e0c67c..24efccc 100644
--- a/Sources/BookApp/MauiProgram.cs
+++ b/Sources/BookApp/MauiProgram.cs
@@ -29,18 +29,22 @@ namespace BookApp
             builder.Logging.AddDebug();
 #endif
             builder.Services.AddSingleton<ILibraryManager, LibraryStub>();
+            builder.Services.AddSingleton<DetailBook>();
             builder.Services.AddSingleton<BookViewModel>();
+            builder.Services.AddSingleton<FilterViewModel>();
+            builder.Services.AddSingleton<SearchBarViewModel>();
+            builder.Services.AddSingleton<ManagerViewModel>();
+
             builder.Services.AddSingleton<ViewModelManager>();
+            builder.Services.AddSingleton<ViewModelNavigation>();
+            builder.Services.AddTransient<ViewModelMenu>();
+
             builder.Services.AddSingleton<Filtrage>();
             builder.Services.AddSingleton<CollectionFiltrage>();
             builder.Services.AddSingleton<Tous>();
             builder.Services.AddSingleton<MainPage>();
-            builder.Services.AddSingleton<ViewModelNavigation>();
             builder.Services.AddSingleton<EmpruntsPrets>();
             builder.Services.AddSingleton<GroupCollection>();
-            builder.Services.AddSingleton<DetailBook>();
-
-            builder.Services.AddTransient<ViewModelMenu>();
 
             // transient pour recharger la data à l'execute
 
diff --git a/Sources/BookApp/ViewModel/ViewModelManager.cs b/Sources/BookApp/ViewModel/ViewModelManager.cs
index 331d5bb..dae768a 100644
--- a/Sources/BookApp/ViewModel/ViewModelManager.cs
+++ b/Sources/BookApp/ViewModel/ViewModelManager.cs
@@ -1,18 +1,16 @@
-using Model;
-using System.Collections.ObjectModel;
-using ToolKit;
+using ToolKit;
 using VMWrapper;
 
 namespace BookApp.ViewModel;
 
 public class ViewModelManager : BaseViewModel
 {
-    public BookViewModel bookViewModel { get; }
+    public ManagerViewModel VMMrg { get; }
     public ViewModelMenu ViewModelMenu { get; } = new ViewModelMenu();
     public ViewModelNavigation ViewModelNavigation { get; } = new ViewModelNavigation();
 
-    public ViewModelManager(BookViewModel viewModel)
+    public ViewModelManager(ManagerViewModel viewModel)
     {
-        bookViewModel = viewModel;
+        VMMrg = viewModel;
     }
 }
diff --git a/Sources/ToolKit/CommandPersonnal.cs b/Sources/ToolKit/CommandPersonnal.cs
new file mode 100644
index 0000000..b7cc07f
--- /dev/null
+++ b/Sources/ToolKit/CommandPersonnal.cs
@@ -0,0 +1,40 @@
+using System;
+using System.Windows.Input;
+
+namespace ToolKit
+{
+    public class CommandPersonnal<T> : ICommand
+    {
+        private readonly Action<T> _execute;
+        private readonly Func<T, bool> _canExecute;
+
+        public event EventHandler CanExecuteChanged;
+
+        public CommandPersonnal(Action<T> execute, Func<T, bool> canExecute = null)
+        {
+            _execute = execute;
+            _canExecute = canExecute ?? (_ => true);
+        }
+
+        public bool CanExecute(object parameter)
+        {
+            return _canExecute == null || _canExecute((T)parameter);
+        }
+
+        public void Execute(object parameter)
+        {
+            _execute((T)parameter);
+        }
+
+        public void RefreshCommand() => CanExecuteChanged?.Invoke(this, EventArgs.Empty);
+    }
+
+    public class CommandPersonnal : CommandPersonnal<object>
+    {
+        public CommandPersonnal(Action execute, Func<bool> canExecute = null)
+            : base(
+                new Action<object>(o => execute()),
+                canExecute != null ? new Func<object, bool>(o => canExecute()) : null
+            ) { }
+    }
+}
diff --git a/Sources/VMWrapper/FilterViewModel.cs b/Sources/VMWrapper/FilterViewModel.cs
new file mode 100644
index 0000000..17ffc94
--- /dev/null
+++ b/Sources/VMWrapper/FilterViewModel.cs
@@ -0,0 +1,13 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace VMWrapper
+{
+    public class FilterViewModel
+    {
+        public FilterViewModel() { }
+    }
+}
diff --git a/Sources/VMWrapper/ManagerViewModel.cs b/Sources/VMWrapper/ManagerViewModel.cs
new file mode 100644
index 0000000..0d4182d
--- /dev/null
+++ b/Sources/VMWrapper/ManagerViewModel.cs
@@ -0,0 +1,22 @@
+using Model;
+
+namespace VMWrapper
+{
+    public class ManagerViewModel
+    {
+        public FilterViewModel filterVm { get; }
+        public SearchBarViewModel searchBar { get; }
+        public BookViewModel bookVm { get; } = new BookViewModel();
+
+        public ManagerViewModel(
+            FilterViewModel filterVm,
+            SearchBarViewModel searchBar,
+            BookViewModel bookVm
+        )
+        {
+            this.filterVm = filterVm;
+            this.searchBar = searchBar;
+            this.bookVm = bookVm;
+        }
+    }
+}
diff --git a/Sources/VMWrapper/SearchBarViewModel.cs b/Sources/VMWrapper/SearchBarViewModel.cs
new file mode 100644
index 0000000..eeb465d
--- /dev/null
+++ b/Sources/VMWrapper/SearchBarViewModel.cs
@@ -0,0 +1,33 @@
+using Model;
+
+namespace VMWrapper
+{
+    public class SearchBarViewModel
+    {
+        private readonly ILibraryManager data;
+
+        public SearchBarViewModel(ILibraryManager data)
+        {
+            this.data = data;
+        }
+
+        public async void SearchAuthor(string nomSearch)
+        {
+            try
+            {
+                var (totalA, authors) = await data.GetAuthorsByName(nomSearch, 0, 5);
+
+                /*foreach (Author author in authors)
+                {
+                    var books = data.GetBooksByAuthor(author.Name, 0, 5).Result.Item2;
+                    var observableBooks = new ObservableCollection<Book>(books);
+                    AuteurGroups.Add(new AuteurGroup(author.Name, observableBooks));
+                }*/
+            }
+            catch (Exception ex)
+            {
+                System.Diagnostics.Debug.WriteLine(ex.Message);
+            }
+        }
+    }
+}