有没安装.NET 3.0框架FocusManager 類別 Provides a set of static methods, attached properties, and events for determining and setting focus scopes and for setting the focused element within the scope. 命名空間: System.Windows.Input 組件： PresentationCore (在 presentationcore.dll 中) XML 命名空間： http://schemas.microsoft.com/winfx/2006/xaml/presentation
Provides a set of static methods, attached properties, and events for determining and setting focus scopes and for setting the focused element within the scope.
命名空間: System.Windows.Input
組件： PresentationCore (在 presentationcore.dll 中)
XML 命名空間： http://schemas.microsoft.com/winfx/2006/xaml/presentation