attributesclassa.vb

大名鼎鼎的mono是.NET平台的跨平台（支持linux

'Author: Ritvik Mayank <[e-mail]>
'Copyright (C) 2005 Novell Inc. (http://www.novell.com)
'use of Simple instead of SimpleAttribute for Class

Imports System

<AttributeUsage(AttributeTargets.Class)> _
Public Class SimpleAttribute
    Inherits System.Attribute

    Public Sub New(ByVal A As String)
        Me.A = A
    End Sub

    Public B As String
    Private A As String

    Public ReadOnly Property A1() As String
        Get
            Return A
        End Get
    End Property
End Class

<Simple("hello")> _
Public Class Class1
    Shared Function Main() As Integer
        Dim type As Type = GetType(Class1)
        Dim arr() As Object = _
        type.GetCustomAttributes(GetType(SimpleAttribute), True)
        If arr.Length <> 1 Then
            Throw New Exception("Class1 should get SimpleAttribute. Lenght of the array should be 1 but got " & arr.Length)
        End If
    End Function

End Class