diff --git a/TheGameExtreme/IO/IOGamePreparation.cs b/TheGameExtreme/IO/IOGamePreparation.cs
new file mode 100644
index 0000000..c4fc6d5
--- /dev/null
+++ b/TheGameExtreme/IO/IOGamePreparation.cs
@@ -0,0 +1,37 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Text;
+using System.Xml.Serialization;
+
+namespace TheGameExtreme.IO
+{
+    class IOGamePreparation
+    {
+        static string pathPlayers = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "NbPlayers.xml");
+
+        public static void SaveParamaterGamePreparation(int nbPlayers)
+        {
+            XmlSerializer ser = new  XmlSerializer(typeof(int));
+            TextWriter tw = new StreamWriter(pathPlayers);
+            ser.Serialize(tw, nbPlayers);
+            tw.Close();
+        }
+        public static int LoadParameterGamePreparation()
+        {
+            XmlSerializer xs = new XmlSerializer(typeof(int));
+            FileStream fs = new FileStream(pathPlayers, FileMode.Open);
+            try
+            {
+                int players = (int)xs.Deserialize(fs);
+                fs.Close();
+                return players;
+            }
+            catch
+            {
+                fs.Close();
+                return 0;
+            }
+        }
+    }
+}
diff --git a/TheGameExtreme/IO/IOOptions.cs b/TheGameExtreme/IO/IOOptions.cs
index 7bcf752..34f1615 100644
--- a/TheGameExtreme/IO/IOOptions.cs
+++ b/TheGameExtreme/IO/IOOptions.cs
@@ -2,24 +2,42 @@
 using System.Collections.Generic;
 using System.IO;
 using System.Text;
+using System.Xml.Serialization;
 
 namespace TheGameExtreme.IO
 {
     class IOOptions
     {
-        string path = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "file.xml");
+        static string path = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "Options.xml");
 
-        public void SaveOptionParameter()
+        public static void SaveOptionParameter(bool b)
         {
-            /*if (!File.Exists(path))
+            
+            XmlSerializer ser = new XmlSerializer(typeof(bool));
+            TextWriter ws = new StreamWriter(path);
+            ser.Serialize(ws, b);
+            ws.Close();
+        }
+
+        public static bool LoadOptionsParameter()
+        {
+            XmlSerializer xs = new XmlSerializer(typeof(bool));
+            
+            try
             {
-                XmlSerializer ser = new XmlSerializer(typeof(bool));
-                using (StreamWriter sw = File.CreateText(path))
+                using(FileStream fs = new FileStream(path, FileMode.Open))
                 {
-                    sw.WriteLine(swTheme.IsToggled);
+                    bool b = (bool)xs.Deserialize(fs);
+                    return b;                
                 }
+            }
+            catch
+            {
+                //fs.Close();
+                return false;
+            }
 
-             }*/
+            
         }
 
     }
diff --git a/TheGameExtreme/view/App.xaml b/TheGameExtreme/view/App.xaml
index 7cadacc..71f87a2 100644
--- a/TheGameExtreme/view/App.xaml
+++ b/TheGameExtreme/view/App.xaml
@@ -3,9 +3,9 @@
     <Application.Resources>
         <ResourceDictionary>
 
-        <Color x:Key="BlackColor">black</Color>
-                <Color x:Key="WhiteColor">white</Color>
-        <Color x:Key="SkyBlueColor">SkyBlue</Color>
+            <Color x:Key="BlackColor">black</Color>
+            <Color x:Key="WhiteColor">white</Color>
+            <Color x:Key="SkyBlueColor">SkyBlue</Color>
 
 
         </ResourceDictionary>
diff --git a/TheGameExtreme/view/GamePreparationPage.xaml b/TheGameExtreme/view/GamePreparationPage.xaml
index 2bbc500..44c2acd 100644
--- a/TheGameExtreme/view/GamePreparationPage.xaml
+++ b/TheGameExtreme/view/GamePreparationPage.xaml
@@ -90,7 +90,7 @@
                     <Picker
                         x:Name="SelectMode"
                         BackgroundColor="{DynamicResource SkyBlueColor}"
-                        SelectedIndexChanged="SelectMode_SelectedIndexChanged"
+                        
                         HorizontalOptions="Center"
                         VerticalOptions="Center"
                         MinimumWidthRequest="30"
@@ -109,7 +109,7 @@
                            HorizontalTextAlignment="Center"/>
                     <Picker x:Name="SelectNbStack"
                                 BackgroundColor="{DynamicResource SkyBlueColor}"
-                                SelectedIndexChanged="SelectNbStack_Changed"                                               
+                                                                              
                                 Margin="0,0,10,0"
                             MinimumWidthRequest="30"
                             WidthRequest="100"
diff --git a/TheGameExtreme/view/GamePreparationPage.xaml.cs b/TheGameExtreme/view/GamePreparationPage.xaml.cs
index 9b5f8f5..3adcccb 100644
--- a/TheGameExtreme/view/GamePreparationPage.xaml.cs
+++ b/TheGameExtreme/view/GamePreparationPage.xaml.cs
@@ -1,6 +1,6 @@
 using System;
 using System.Collections.Generic;
-
+using TheGameExtreme.IO;
 using Xamarin.Forms;
 
 namespace TheGameExtreme.view
@@ -18,13 +18,15 @@ namespace TheGameExtreme.view
             NavigationPage.SetHasNavigationBar(this, false);
 
             PlayerSelecter.ItemsSource = listNbPlayer;
-            PlayerSelecter.SelectedIndex = 0;
+            LoadParameterNbPlayerGamePreparation();
 
             SelectMode.ItemsSource = listGameMode;
             SelectMode.SelectedIndex = 0;
 
             SelectNbStack.ItemsSource = listNbStack;
             SelectNbStack.SelectedIndex = 0;
+
+            
         }
 
         private async void Back(object sender, EventArgs e)
@@ -46,7 +48,7 @@ namespace TheGameExtreme.view
                     return;
                 }
             }
-
+            IOGamePreparation.SaveParamaterGamePreparation(PlayerSelecter.SelectedIndex);
             await Navigation.PushAsync(new MainPage(playersNames, (int)SelectNbStack.SelectedItem, (int)SelectMode.SelectedIndex));
         }
 
@@ -66,16 +68,7 @@ namespace TheGameExtreme.view
                         HorizontalOptions = LayoutOptions.Center
                         
                     };
-                    //Frame myFrame = new Frame
-                    //{
-                    //    BackgroundColor = (Color)Application.Current.Resources["SkyBlueColor"],
-                    //    HeightRequest = 45,
-                    //    VerticalOptions = LayoutOptions.Center,
-                    //    HorizontalOptions = LayoutOptions.Center,
-                    //    WidthRequest = 120,
-                    //    CornerRadius = 10,
-                    //    Content = e
-                    //};
+                    
 
                     NameList.Children.Add(e);
                 }
@@ -85,17 +78,13 @@ namespace TheGameExtreme.view
                 }
             }
         }
-
-        
-
-        private void SelectNbStack_Changed(object sender, EventArgs args)
+        public void LoadParameterNbPlayerGamePreparation()
         {
-
+            int nbJoueurs = IOGamePreparation.LoadParameterGamePreparation();
+            PlayerSelecter.SelectedIndex = nbJoueurs;
         }
 
-        private void SelectMode_SelectedIndexChanged(object sender, EventArgs e)
-        {
 
-        }
+
     }
 }
diff --git a/TheGameExtreme/view/HomePage.xaml.cs b/TheGameExtreme/view/HomePage.xaml.cs
index aa0721b..5ccccd1 100644
--- a/TheGameExtreme/view/HomePage.xaml.cs
+++ b/TheGameExtreme/view/HomePage.xaml.cs
@@ -4,6 +4,7 @@ using System.IO;
 using System.Xml.Serialization;
 using Xamarin.Forms;
 using System.Diagnostics;
+using TheGameExtreme.IO;
 
 namespace TheGameExtreme.view
 {
@@ -14,12 +15,9 @@ namespace TheGameExtreme.view
         {
             InitializeComponent();
             NavigationPage.SetHasNavigationBar(this, false);
-            /*string path = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "file.xml");
-            XmlSerializer xs = new XmlSerializer(typeof(bool));
-            FileStream fs = new FileStream(path, FileMode.Open);
-            bool test = (bool)xs.Deserialize(fs);
-            Debug.WriteLine(test);*/         
-            
+
+            LoadParameterOptionOnHomepage();
+
         }        
         private async void OpenGame(object sender, EventArgs args)
         {
@@ -41,6 +39,22 @@ namespace TheGameExtreme.view
             await DisplayAlert("Règles", AppRessource.StrRules, "Fermer");
         }
         
+        public void LoadParameterOptionOnHomepage()
+        {
+            bool b = IOOptions.LoadOptionsParameter();
+            if (!b)
+            {
+                Application.Current.Resources["BlackColor"] = Color.Black;
+                Application.Current.Resources["WhiteColor"] = Color.White;
+            }
+            else
+            {
+                Application.Current.Resources["BlackColor"] = Color.White;
+                Application.Current.Resources["WhiteColor"] = Color.Black;
+            }
+        }
+
+        
         
     }
 }
diff --git a/TheGameExtreme/view/Settings.xaml.cs b/TheGameExtreme/view/Settings.xaml.cs
index de3c6c0..7621477 100644
--- a/TheGameExtreme/view/Settings.xaml.cs
+++ b/TheGameExtreme/view/Settings.xaml.cs
@@ -7,6 +7,7 @@ using System.Runtime.Serialization.Json;
 using System.Text;
 using System.Xml;
 using System.Xml.Serialization;
+using TheGameExtreme.IO;
 using Xamarin.Forms;
 
 namespace TheGameExtreme.view
@@ -15,7 +16,7 @@ namespace TheGameExtreme.view
     public partial class Settings : ContentPage 
         
     {
-        private bool bSwitchSerialisation;
+        
         public Settings()
         {            
             InitializeComponent();
@@ -24,12 +25,12 @@ namespace TheGameExtreme.view
             if(pageContentSetting.BackgroundColor == Color.Black)
             {              
                 swTheme.IsToggled = false;
-                bSwitchSerialisation = swTheme.IsToggled;
+                
             }
             else
             {
                 swTheme.IsToggled = true;
-                bSwitchSerialisation = swTheme.IsToggled;
+                
             }
 
         }
@@ -69,37 +70,22 @@ namespace TheGameExtreme.view
             {
                 Application.Current.Resources["BlackColor"] = Color.Black;
                 Application.Current.Resources["WhiteColor"] = Color.White;
-                Application.Current.Resources["SkyBlueColor"] = Color.SkyBlue;               
+                               
             }
             else
             {
                 Application.Current.Resources["BlackColor"] = Color.White;
                 Application.Current.Resources["WhiteColor"] = Color.Black;
-                Application.Current.Resources["BlueSkyColor"] = Color.SkyBlue;
+                
             }
         }
 
         private async void SettingToHomePage(object sender, EventArgs e)
         {
+            IOOptions.SaveOptionParameter(swTheme.IsToggled);
+
             //serialisationSwitch();
-            await Navigation.PopAsync();        
+            await Navigation.PopAsync();
         }
-
-        
-
-        /*public void serialisationSwitch()
-        {
-            string path = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "file.xml");
-
-            if (!File.Exists(path))
-            {
-                XmlSerializer ser = new XmlSerializer(typeof(bool));
-                using (StreamWriter sw = File.CreateText(path))
-                {
-                    sw.WriteLine(swTheme.IsToggled);
-                }
-                
-            }           
-        }*/
     }
 }