何处使用 PropertyGrid 控件
在应用程序中的很多地方，您都可以使用户与 PropertyGrid 进行交互，从而获得更丰富的编辑体验。例如，某个应用程序包含多个用户可以设置的“设置”或选项，其中一些可能十分复杂。您可以使用单选按钮、组合框或文本框来表示这些选项。但本文将逐步介绍如何使用 PropertyGrid 控件创建选项窗口来设置应用程序选项。上面所创建的 OptionsDialog 窗体即是选项窗口的开始。现在，我们创建一个名为 AppSettings 的类，其中包含映射到应用程序设置的所有属性。如果创建单独的类而不使用多个分散的变量，设置将更便于管理和维护。
' Visual Basic
Public Class AppSettings
Private _saveOnClose As Boolean = True
Private _greetingText As String = "欢迎使用应用程序！"
Private _maxRepeatRate As Integer = 10
Private _itemsInMRU As Integer = 4
Private _settingsChanged As Boolean = False
Private _appVersion As String = "1.0"
Public Property SaveOnClose() As Boolean
Get
Return _saveOnClose
End Get
Set(ByVal Value As Boolean)
SaveOnClose = Value
End Set
End Property
Public Property GreetingText() As String
Get
Return _greetingText
End Get
Set(ByVal Value As String)
_greetingText = Value
End Set
End Property
Public Property ItemsInMRUList() As Integer
Get
Return _itemsInMRU
End Get
Set(ByVal Value As Integer)
_itemsInMRU = Value
End Set
End Property
Public Property MaxRepeatRate() As Integer
Get
Return _maxRepeatRate
End Get
Set(ByVal Value As Integer)
_maxRepeatRate = Value
End Set
End Property
Public Property SettingsChanged() As Boolean
Get
Return _settingsChanged
End Get
Set(ByVal Value As Boolean)
_settingsChanged = Value
End Set
End Property
Public Property AppVersion() As String
Get
Return _appVersion
End Get
Set(ByVal Value As String)
_appVersion = Value
End Set
End Property
End Class