Merge branch 'punker76-HamburgerMenu-Content-Binding-fix' into develop

Author: punker76

src/MahApps.Metro.Samples/MahApps.Metro.Demo/MahApps.Metro.Demo.Shared/ExampleViews/HamburgerMenuSample.xaml

@@ -55,6 +55,7 @@
                                 Margin="20"
                                 Foreground="White"
                                 HamburgerWidth="48"
+                                Content="{Binding RelativeSource={RelativeSource Self}, Mode=OneWay, Path=SelectedItem}"
                                 ItemClick="HamburgerMenu_OnItemClick"
                                 ItemTemplate="{StaticResource HamburgerMenuImageItem}"
                                 OptionsItemClick="HamburgerMenu_OnOptionsItemClick"

src/MahApps.Metro.Samples/MahApps.Metro.Demo/MahApps.Metro.Demo.Shared/ExampleViews/HamburgerMenuSample.xaml.cs

@@ -13,7 +13,15 @@ public HamburgerMenuSample()
 
         private void HamburgerMenu_OnItemClick(object sender, ItemClickEventArgs e)
         {
-            HamburgerMenuControl.Content = e.ClickedItem;
+            // instead using binding Content="{Binding RelativeSource={RelativeSource Self}, Mode=OneWay, Path=SelectedItem}"
+            // we can do this
+            //HamburgerMenuControl.Content = e.ClickedItem;
+
+            // close the menu if a item was selected
+            if (this.HamburgerMenuControl.IsPaneOpen)
+            {
+                this.HamburgerMenuControl.IsPaneOpen = false;
+            }
         }
 
         private async void HamburgerMenu_OnOptionsItemClick(object sender, ItemClickEventArgs e)

src/MahApps.Metro/MahApps.Metro.Shared/Controls/HamburgerMenu/HamburgerMenu.cs

@@ -70,7 +70,7 @@ public override void OnApplyTemplate()
 
         private void HamburgerMenu_Loaded(object sender, RoutedEventArgs e)
         {
-            this.Content = _buttonsListView?.SelectedItem ?? _optionsListView?.SelectedItem;
+            this.SetCurrentValue(ContentProperty, _buttonsListView?.SelectedItem ?? _optionsListView?.SelectedItem);
         }
     }
 }