update to v1.2.0

HandyControlDemo/UserControl/Main/LeftMainContent.xaml.cs

@@ -0,0 +1,14 @@
+// ReSharper disable once CheckNamespace
+namespace HandyControlDemo.UserControl
+{
+    /// <summary>
+    ///     左侧主内容
+    /// </summary>
+    public partial class LeftMainContent
+    {
+        public LeftMainContent()
+        {
+            InitializeComponent();
+        }
+    }
+}