diff --git a/Commands/ClosingWindowBehavior.cs b/Commands/ClosingWindowBehavior.cs
index eaa2dd7..0a98bec 100644
--- a/Commands/ClosingWindowBehavior.cs
+++ b/Commands/ClosingWindowBehavior.cs
@@ -1,8 +1,8 @@
+using Microsoft.Xaml.Behaviors;
using System.ComponentModel;
using System.Windows;
using System.Windows.Input;
-using System.Windows.Interactivity;
namespace YwxApp.AiChat.Commands
{
diff --git a/MainWindow.xaml b/MainWindow.xaml
index c49f80f..d40905d 100644
--- a/MainWindow.xaml
+++ b/MainWindow.xaml
@@ -1,6 +1,6 @@
-
-
+
+
-
+
@@ -52,7 +52,7 @@
-
+