fix： login回车事件

LoginWindow.xaml

@@ -10,7 +10,8 @@
         AllowsTransparency="True"
         Background="Transparent"
         ResizeMode="NoResize"
-        Title="LoginWindow" Height="450" Width="450">
+        Title="LoginWindow" Height="450" Width="450"        
+        KeyDown="PasswordBox_KeyDown">
     <Grid MouseLeftButtonDown="Grid_MouseLeftButtonDown">
         <Border CornerRadius="20"
                 BorderThickness="1"

LoginWindow.xaml.cs

@@ -200,4 +200,11 @@ public partial class LoginWindow : Window
         }
         return password;
     }
+    private void PasswordBox_KeyDown(object sender, KeyEventArgs e)
+    {
+        if (e.Key == Key.Enter)
+        {
+            ConfirmButton_Click(sender, new RoutedEventArgs());
+        }
+    }
 }