讀取自定義程序集屬性

Question

我爲一個DLL定義了下面的Assembly Attribute，但我無法在不同的Project中讀出它。你有什麼建議嗎？

大會屬性：

Namespace Extensions.CustomAttributes 

    <AttributeUsage(AttributeTargets.All, Inherited:=True, AllowMultiple:=True)> 

    Public Class DeveloperNoteAttribute 
     Inherits System.Attribute 

     Protected strName, strComment As String 
     Protected blnBug As Boolean 

     Public Sub New(ByVal Name As String, ByVal Comment As String, ByVal DateRecorded As String) 
      MyBase.New() 
      strName = Name 
      strComment = Comment 
     End Sub 

     Public Property Name As String 
      Get 
       Return strName 
      End Get 
      Set(ByVal value As String) 
       strName = value 
      End Set 
     End Property 

     Public Property Comment As String 
      Get 
       Return strComment 
      End Get 
      Set(ByVal value As String) 
       strComment = value 
      End Set 
     End Property 

     Public Property Bug As Boolean 
      Get 
       Return blnBug 
      End Get 
      Set(ByVal value As Boolean) 
       blnBug = value 
      End Set 
     End Property 

    End Class 

End Namespace 

AssemblyInfo.vb中：

<Assembly: Extensions.CustomAttributes.DeveloperNoteAttribute("Test1", "Test2", "Test3")> 

獲取另一個項目屬性（通過變量：文件名）

Dim oAssem As System.Reflection.Assembly = System.Reflection.Assembly.LoadFrom(Filename) 

' Get any assembly-level attributes 
Dim oAttribs() As Attribute = Attribute.GetCustomAttributes(oAssem) 
For Each att In oAttribs 
    Try 
     Dim at As Extensions.CustomAttributes.DeveloperNoteAttribute = CType(att, Extensions.CustomAttributes.DeveloperNoteAttribute) 
     Debug.WriteLine(at.Name.ToString) 
    Catch ex As Exception 

    End Try 
Next 

在調試器中我只是得到一個很多「System.InvalidCastException」

Answer 1

問題對未來遊客的解決方案：

1. 您可以自定義一個集屬性像我一樣，在我的問題上面。

2. 要讀出自定義屬性，可以使用System.Attribute.GetCustomAttributes（）來獲取所有定義屬性的數組。但是你也可以使用System.Attribute.GetCustomAttribute（）來獲取你傳遞的類型的特定屬性。

信息：

• System.Attribute：http://msdn.microsoft.com/en-us/library/system.attribute.aspx
• GetCustomAttribute（）：http://msdn.microsoft.com/en-us/library/k7s8054x.aspx

非常感謝到@DanVerdolino他的幫助！