Synchronize the Net40

Net40/HandyControlDemo_Net40/UserControl/Basic/ChatBox.xaml.cs

@@ -0,0 +1,10 @@
+namespace HandyControlDemo.UserControl
+{
+    public partial class ChatBox
+    {
+        public ChatBox()
+        {
+            InitializeComponent();
+        }
+    }
+}