vb.net類的屬性定義,使用方式
阿新 • • 發佈:2019-01-31
Namespace mySpace
Public Class MyClass1
Private Property _myID As String
Private Property _myName As String
Private Property Y As Integer
Public Property X As Integer
Public Property myID As String
Get
Return _myID
End Get
Set(value As String)
_myID = value
End Set
End Property
Public Property myName As String
Get
Return _myName
End Get
Set(value As String)
_myName = value
End Set
End Namespace
Public Class MyClass1
Private Property _myID As String
Private Property _myName As String
Private Property Y As Integer
Public Property X As Integer
Public Property myID As String
Get
Return _myID
End Get
Set(value As String)
_myID = value
End Set
End Property
Public Property myName As String
Get
Return _myName
End Get
Set(value As String)
_myName = value
End Set
End Property
Public Property mX As Interger
Get
X
End Get
Set(value As Inter)
X=2*Y
End Set
End Property
End ClassEnd Namespace
註釋:這裡定義為屬性的意義
1 通過私有屬性來訪問公有屬性,達到安全控制的目的
2 通過私有屬性來訪問公有屬性,還可以在賦值的時候,做一些限制或者特殊的處理,計算。達到對私有屬性更高一層的控制。某一個屬性的值改變了,自動觸發另外一個屬性的值。不用在外部通過事件的程式碼來實現。