Implemented core logic

GifResizer/Views/MainWindow.xaml.cs

@@ -17,24 +17,44 @@ public partial class MainWindow : Window
         InitializeComponent();
         _mainViewModel = viewModel;
         DataContext = _mainViewModel;
-        
     }
     
     private void BrowseButton_Click(object sender, RoutedEventArgs e)
     {
-        OpenFileDialog fileDialog = new OpenFileDialog
+        try
         {
-            Filter = "GIF files (*.gif)|*.gif|All files (*.*)|*.*",
-            Title = "Select a GIF file"
-        };
+            OpenFileDialog fileDialog = new OpenFileDialog
+            {
+                Title = "Select a GIF file",
+                Filter = "GIF files (*.gif)|*.gif|All files (*.*)|*.*"
+            };
         
-        if (fileDialog.ShowDialog() == true)
+            if (fileDialog.ShowDialog() == true)
+            {
+                _mainViewModel.FilePath = fileDialog.FileName;
+            }
+        } 
+        catch (Exception ex)
         {
-            _mainViewModel.FilePath = fileDialog.FileName;
+            DisplayErrorMessage("An error occured while selecting the GIF file: " + ex.Message);
         }
+
     }
     
     private void ResizeButton_Click(object sender, RoutedEventArgs e)
     {
+        try
+        {
+            _mainViewModel.ResizeGif(128,128);
+        }
+        catch (Exception ex)
+        {
+            DisplayErrorMessage("An error occured while resizing the GIF: " + ex.Message);
+        }
+    }
+    
+    private void DisplayErrorMessage(string message)
+    {
+        MessageBox.Show(message, "Error", MessageBoxButton.OK, MessageBoxImage.Error);
     }
 }