GUI: Load metadata file

Il2CppInspector.GUI/App.xaml

@@ -1,7 +1,6 @@
-<Application x:Class="App"
+<Application x:Class="Il2CppInspectorGUI.App"
              xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
              xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-             xmlns:local="clr-namespace:Il2CppInspector.GUI"
              StartupUri="MainWindow.xaml">
     <Application.Resources>
          

Il2CppInspector.GUI/App.xaml.cs

@@ -2,16 +2,34 @@
 using System.Collections.Generic;
 using System.Configuration;
 using System.Data;
+using System.IO;
 using System.Linq;
 using System.Threading.Tasks;
 using System.Windows;
+using Il2CppInspector;
 
-namespace Il2CppInspector.GUI
+namespace Il2CppInspectorGUI
 {
     /// <summary>
     /// Interaction logic for App.xaml
     /// </summary>
     public partial class App : Application
     {
+        public Metadata CurrentMetadata { get; private set; }
+
+        public Exception LastException { get; private set; }
+
+        // Attempt to load an IL2CPP metadata file
+        public Task<bool> LoadMetadataAsync(string metadataFile) =>
+            Task.Run(() => {
+                try {
+                    CurrentMetadata = new Metadata(new MemoryStream(File.ReadAllBytes(metadataFile)));
+                    return true;
+                }
+                catch (Exception ex) {
+                    LastException = ex;
+                    return false;
+                }
+            });
     }
 }

Il2CppInspector.GUI/MainWindow.xaml

@@ -1,9 +1,9 @@
-<Window x:Class="Il2CppInspector.GUI.MainWindow"
+<Window x:Class="Il2CppInspectorGUI.MainWindow"
         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
-        xmlns:local="clr-namespace:Il2CppInspector.GUI"
+        xmlns:local="clr-namespace:Il2CppInspectorGUI"
         mc:Ignorable="d"
         Title="Il2CppInspector" Height="450" Width="800" Background="White">
     <Window.Resources>
@@ -70,13 +70,26 @@
     <Grid>
         <!-- Main content -->
         <Grid>
-            <TextBlock>Content of window</TextBlock>
+            <!-- Information about the loaded metadata and binary -->
+            <Grid>
+                <Grid.RowDefinitions>
+                    <RowDefinition Height ="Auto" />
+                    <RowDefinition Height ="Auto" />
+                    <RowDefinition Height ="Auto" />
+                </Grid.RowDefinitions>
+                <Grid.ColumnDefinitions>
+                    <ColumnDefinition Width="25*"></ColumnDefinition>
+                    <ColumnDefinition Width="25*"></ColumnDefinition>
+                    <ColumnDefinition Width="25*"></ColumnDefinition>
+                    <ColumnDefinition Width="25*"></ColumnDefinition>
+                </Grid.ColumnDefinitions>
+                <Label Grid.Row="0" Grid.Column="0" Content="IL2CPP Metadata version"></Label>
+                <Label Name="lblMetadataVersion" Grid.Row="0" Grid.Column="1" Content="{Binding Path=Version}"></Label>
+            </Grid>
         </Grid>
 
         <!-- Light boxes -->
-        <Grid Name="areaLoadMetadata">
         <Rectangle Name="rectModalLightBoxBackground" Fill="Black" Opacity="0.4"></Rectangle>
         <Button Name="btnSelectMetadataFile" Style="{StaticResource LightBoxButton}" Click="BtnSelectMetadataFile_OnClick">Select an IL2CPP metadata file</Button>
     </Grid>
-    </Grid>
 </Window>

Il2CppInspector.GUI/MainWindow.xaml.cs

@@ -1,6 +1,8 @@
 using System;
 using System.Collections.Generic;
+using System.IO;
 using System.Linq;
+using System.Reflection;
 using System.Text;
 using System.Threading.Tasks;
 using System.Windows;
@@ -13,8 +15,9 @@ using System.Windows.Media.Imaging;
 using System.Windows.Navigation;
 using System.Windows.Shapes;
 using Microsoft.Win32;
+using Il2CppInspector;
 
-namespace Il2CppInspector.GUI
+namespace Il2CppInspectorGUI
 {
     /// <summary>
     /// Interaction logic for MainWindow.xaml
@@ -28,11 +31,26 @@ namespace Il2CppInspector.GUI
         /// <summary>
         /// Select global metadata file
         /// </summary>
-        private void BtnSelectMetadataFile_OnClick(object sender, RoutedEventArgs e) {
+        private async void BtnSelectMetadataFile_OnClick(object sender, RoutedEventArgs e) {
-            var openFileDialog = new OpenFileDialog();
+            var app = (App) Application.Current;
-            openFileDialog.Filter = "IL2CPP global metadata file|global-metadata.dat|All files (*.*)|*.*";
+
+            var openFileDialog = new OpenFileDialog {
+                Filter = "IL2CPP global metadata file|global-metadata.dat|All files (*.*)|*.*",
+                CheckFileExists = true
+            };
+
+            btnSelectMetadataFile.Visibility = Visibility.Hidden;
+
             if (openFileDialog.ShowDialog() == true) {
-                // openFileDialog.FileName
+                // Load the metadata file
+                if (await app.LoadMetadataAsync(openFileDialog.FileName)) {
+                    // Metadata loaded successfully
+                    lblMetadataVersion.DataContext = app.CurrentMetadata;
+                }
+                else {
+                    MessageBox.Show(this, app.LastException.Message, "Error", MessageBoxButton.OK, MessageBoxImage.Error);
+                    btnSelectMetadataFile.Visibility = Visibility.Visible;
+                }
             }
         }
     }