如何篩選或查找基於屬性的屬性

Question

我有一個類如下

Public Class Foo 
    Private _Name As String 
    <ShowInDisplay()> _ 
    Public Property Name() As String 
     Get 
      Return _Name 
     End Get 
     Set(ByVal value As String) 
      _Name = value 
     End Set 
    End Property 

    Private _Age As String 
    Public Property Age() As String 
     Get 
      Return _Age 
     End Get 
     Set(ByVal value As String) 
      _Age = value 
     End Set 
    End Property 

    Private _ContactNumber As String 
    <ShowInDisplay()> _ 
    Public Property ContactNumber() As String 
     Get 
      Return _ContactNumber 
     End Get 
     Set(ByVal value As String) 
      _ContactNumber = value 
     End Set 
    End Property 
End Class 

我只需要工作只具有特定屬性，例如這些屬性：ShowInDisplay

Public Sub DisplayOnlyPublic(ByVal Someobject As Foo) 
    For Each _Property As something In Someobject.Properties 
     If _Property.HasAttribute("ShowInDisplay") Then 
      Console.WriteLine(_Property.Name & "=" & _Property.value) 
     End If 
    Next 
End Sub 

Answer 1

編輯：用正確的VB更新致電：

If _Property.IsDefined(GetType(ShowInDisplayAttribute), True) Then 

Answer 2

除了可以使用擴展方法/ lambda表達式（無論在c＃中）使用它更好之外，沒有比在每個可用屬性上使用MemberInfo.IsDefined更簡單的方法。