added whatsnew function

App.config

@@ -19,6 +19,9 @@
             <setting name="UpdateSettings" serializeAs="String">
                 <value>True</value>
             </setting>
+            <setting name="LastSeenVersion" serializeAs="String">
+                <value />
+            </setting>
         </Elite_Dangerous_Addon_Launcer_V2.Properties.Settings>
     </userSettings>
 </configuration>

Elite Dangerous Addon Launcher V2.csproj

@@ -6,8 +6,8 @@
     <RootNamespace>Elite_Dangerous_Addon_Launcer_V2</RootNamespace>
     <Nullable>enable</Nullable>
     <UseWPF>true</UseWPF>
-    <AssemblyVersion>1.1.2.329</AssemblyVersion>
-    <FileVersion>1.1.2.329</FileVersion>
+    <AssemblyVersion>1.1.2.335</AssemblyVersion>
+    <FileVersion>1.1.2.335</FileVersion>
     <ApplicationIcon>elite-dangerous-icon.ico</ApplicationIcon>
     <PackageIcon>app.png</PackageIcon>
     <PackageProjectUrl>https://github.com/jimmyeao/Elite-Dangerous-Addon-Launcher-V2</PackageProjectUrl>

MainWindow.xaml.cs

@@ -13,6 +13,7 @@
 using System.Threading.Tasks;
 using System.Windows;
 using System.Windows.Controls;
+using System.Windows.Documents;
 using System.Windows.Media;
 
 namespace Elite_Dangerous_Addon_Launcer_V2
@@ -356,6 +357,65 @@ private void Btn_Edit_Click(object sender, RoutedEventArgs e)
                 addAppWindow.ShowDialog();
             }
         }
+        public void ShowWhatsNewIfUpdated()
+        {
+            // Get the current assembly version.
+            var assemblyVersion = System.Reflection.Assembly.GetExecutingAssembly().GetName().Version;
+
+            // Get the last seen version from the application settings.
+            var lastSeenVersion = Properties.Settings.Default.LastSeenVersion;
+
+            // If the last seen version is empty (which it will be the first time this method is run)
+            // or if the assembly version is greater than the last seen version, show the what's new dialog.
+            if (string.IsNullOrEmpty(lastSeenVersion) || new Version(lastSeenVersion) < assemblyVersion)
+            {
+                ShowWhatsNew();
+
+                // Update the last seen version in the application settings.
+                Properties.Settings.Default.LastSeenVersion = assemblyVersion.ToString();
+
+                // Save the application settings.
+                Properties.Settings.Default.Save();
+            }
+        }
+
+        public void ShowWhatsNew()
+        {
+            WhatsNewWindow whatsNewWindow = new WhatsNewWindow();
+
+            // Set the text to what's new
+            Paragraph titleParagraph = new Paragraph();
+            titleParagraph.Inlines.Add(new Bold(new Run("New for this version")));
+            whatsNewWindow.WhatsNewText.Document.Blocks.Add(titleParagraph);
+
+            List list = new List();
+
+            ListItem listItem1 = new ListItem(new Paragraph(new Run("Launch Options For Elite")));
+            list.ListItems.Add(listItem1);
+
+            ListItem listItem2 = new ListItem(new Paragraph(new Run("Profile Options for import/export and copy/rename/delete")));
+            list.ListItems.Add(listItem2);
+
+            ListItem listItem3 = new ListItem(new Paragraph(new Run("Added themed dialogs")));
+            list.ListItems.Add(listItem3);
+
+            ListItem listItem4 = new ListItem(new Paragraph(new Run("Fly safe, Cmdr! o7")));
+            list.ListItems.Add(listItem4);
+
+            whatsNewWindow.WhatsNewText.Document.Blocks.Add(list);
+
+            whatsNewWindow.Owner = this; // Set owner to this MainWindow
+            whatsNewWindow.WindowStartupLocation = WindowStartupLocation.CenterOwner; // Center the window over its owner
+
+            whatsNewWindow.ShowDialog();
+        }
+
+
+
+
+
+
+
 
         private void Btn_Launch_Click(object sender, RoutedEventArgs e)
         {
@@ -577,6 +637,7 @@ private async void MainWindow_Loaded(object sender, RoutedEventArgs e)
                 CheckEdLaunchInProfile();
                 _isChecking = false;
             }
+            ShowWhatsNewIfUpdated();
         }
 
         private void ModifyTheme(Uri newThemeUri)

Properties/Settings.settings

@@ -14,5 +14,8 @@
     <Setting Name="UpdateSettings" Type="System.Boolean" Scope="User">
       <Value Profile="(Default)">True</Value>
     </Setting>
+    <Setting Name="LastSeenVersion" Type="System.String" Scope="User">
+      <Value Profile="(Default)" />
+    </Setting>
   </Settings>
 </SettingsFile>

WhatsNew.xaml

@@ -0,0 +1,39 @@
+<Window x:Class="Elite_Dangerous_Addon_Launcer_V2.WhatsNewWindow"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:local="clr-namespace:Elite_Dangerous_Addon_Launcer_V2"
+        xmlns:materialDesign="http://materialdesigninxaml.net/winfx/xaml/themes"
+        Title="What's New" 
+        Width="600" 
+        Height="400"
+        TextElement.Foreground="{DynamicResource MaterialDesignBody}"
+        TextElement.FontWeight="Regular"
+        TextElement.FontSize="14"
+        TextOptions.TextFormattingMode="Ideal" 
+        TextOptions.TextRenderingMode="Auto"        
+        Background="{DynamicResource MaterialDesignPaper}"
+        FontFamily="{DynamicResource MaterialDesignFont}">
+    <materialDesign:Card>
+        <Grid>
+            <Grid.RowDefinitions>
+                <RowDefinition Height="*"/>
+                <RowDefinition Height="Auto"/>
+            </Grid.RowDefinitions>
+
+            <RichTextBox x:Name="WhatsNewText" 
+                         Grid.Row="0" 
+                         IsReadOnly="True" 
+                         ScrollViewer.VerticalScrollBarVisibility="Auto"
+                         Margin="10">
+                <FlowDocument/>
+            </RichTextBox>
+
+            <Button x:Name="CloseButton" 
+                    Grid.Row="1" 
+                    Content="Close" 
+                    Margin="10" 
+                    HorizontalAlignment="Right" 
+                    Click="Bt_Close_Click"/>
+        </Grid>
+    </materialDesign:Card>
+</Window>

WhatsNew.xaml.cs

@@ -0,0 +1,31 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Data;
+using System.Windows.Documents;
+using System.Windows.Input;
+using System.Windows.Media;
+using System.Windows.Media.Imaging;
+using System.Windows.Shapes;
+
+namespace Elite_Dangerous_Addon_Launcer_V2
+{
+    /// <summary>
+    /// Interaction logic for WhatsNew.xaml
+    /// </summary>
+    public partial class WhatsNewWindow : Window
+    {
+        public WhatsNewWindow()
+        {
+            InitializeComponent();
+        }
+        private void Bt_Close_Click(object sender, RoutedEventArgs e)
+        {
+            this.Close();
+        }
+    }
+}