也许还有很多人对于VB.NET这样一款编程语言还不太了解。它是一款功能成强大的语言,直接面向对象,并且可以创造一个结构性比较牢固的编程化境。我们今天要为大家介绍的是VB.NET类属性相关概念。其中有以下几种需要举例的。#t#
VB.NET类属性1、
- Public Property Rank() As String
'注意这里的属性名后面有个括号 - Get
- Return strPos
- End Get
- Set(ByVal value As String)
- strPos = value
- End Set
- End Property
VB.NET类属性2、
Public ReadOnly Property rHobby() As
String 'Readonly要在Property前面
Get
Dim i As Integer
Dim s As String
s = Join(strHobby, ",")
'这个函数就是用来连接数组中的字符串的
Return s
End Get
End Property
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VB.NET类属性3、
'这是定义索引器呀!
Public ReadOnly Property indexHobby
(ByVal index As Integer) As String
Get
If (strHobby Is Nothing) Or (index >
UBound(strHobby)) Then
'注意到上面的UBound()了没?还有LBound()!
'它们所在的命名空间是Microsoft.VisualBasic
Return Nothing
End If
Return strHobby(index)
End Get
End Property
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VB.NET类属性4、
Public WriteOnly Property wHobby()
As String
Set(ByVal value As String)
If value Is Nothing Then
If Not (strHobby Is Nothing) And
strHobby.GetLength(0) > 1 Then
ReDim Preserve strHobby(UBound
(strHobby) - 1)
End If
Else
If strHobby Is Nothing Then
ReDim strHobby(0)
Else
ReDim Preserve strHobby(UBound
(strHobby) + 1)
End If
strHobby(UBound(strHobby)) = value
End If
End Set
End Property
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5、
Default Public Property Words
(ByVal index As Integer) As
String'注意Default
Get '注意到参数了吗?使用这个属性的时候,
就跟实现了索引器效果一样。
<ClassObj(index)>
Words = theWords(index)
End Get
Set(ByVal value As String)
theWords(index) = value
End Set
End Property
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