The name 'Super' does not exist in the current context

'KeyboardOptions' does not contain a definition for 'AutoAttachToLifecycleEvents' and no accessible extension method 'AutoAttachToLifecycleEvents' accepting a first argument of type 'KeyboardOptions' could be found (are you missing a using directive or an assembly reference?)

Member 'KeyboardManager.AttachKeyboard(UIElement)' cannot be accessed with an instance reference; qualify it with a type name instead

Dereference of a possibly null reference.

The name 'KeyboardReleased' does not exist in the current context

The name 'KeyboardPressed' does not exist in the current context

The name 'Super' does not exist in the current context

'KeyboardOptions' does not contain a definition for 'AutoAttachToLifecycleEvents' and no accessible extension method 'AutoAttachToLifecycleEvents' accepting a first argument of type 'KeyboardOptions' could be found (are you missing a using directive or an assembly reference?)

Member 'KeyboardManager.AttachKeyboard(UIElement)' cannot be accessed with an instance reference; qualify it with a type name instead