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我正在使用我的自定义处理程序 AbraMain.MyConfigHandler 在 app.config 中创建 configSections

错误：

无法从程序集 'System.Configuration，Version=4.0.0.0，Culture=neutral，PublicKeyToken=b03f5f7f11d50a3a' 加载类型 'AbraMain.MyConfigHandler.ApplicationListCollection'。":"AbraMain.MyConfigHandler.ApplicationListCollection"

应用程序配置

<configuration>
  <configSections>
     <section name="applicationList" type ="AbraMain.MyConfigHandler.ApplicationListCollection"/>
  </configSections>
  <applicationList>
     <add name="Abra Backup" index="0" iconIndex="0" desc="AbraBackup"/>
     <add name="Abra Backup" index="0" iconIndex="0" desc="AbraBackup"/>
  </applicationList>
</configuration>

MyConfigHandler.vb

命名空间 MyConfigHandler

'Desc : Individual Application configuration Class
'Handle Tag : App.config -> <applicationList> -> <add>
Public Class ApplInfoConfig
Inherits ConfigurationElement

<ConfigurationProperty("name", IsRequired:=True)> _
Public Property name() As String
  Get
    Return CStr(Me("name"))
  End Get
  Set(ByVal value As String)
    Me("name") = value
  End Set
End Property

<ConfigurationProperty("desc", DefaultValue:="", IsRequired:=False)> _
Public Property desc() As String
  Get
    Return CStr(Me("desc"))
  End Get
  Set(ByVal value As String)
    Me("desc") = value
  End Set
End Property

<ConfigurationProperty("subPath", DefaultValue:="", IsRequired:=False)> _
Public Property subPath() As String
  Get
    Return CStr(Me("subPath"))
  End Get
  Set(ByVal value As String)
    Me("subPath") = value
  End Set
End Property

<ConfigurationProperty("index", IsRequired:=True)> _
Public Property index() As Integer
  Get
    Return Me("index")
  End Get
  Set(ByVal value As Integer)
    Me("index") = value
  End Set
End Property

<ConfigurationProperty("iconIndex", DefaultValue:="0", IsRequired:=False)> _
Public Property iconIndex() As Integer
  Get
    Return Me("iconIndex")
  End Get
  Set(ByVal value As Integer)
    Me("iconIndex") = value
  End Set
End Property
End Class

'Desc : Collection of Individual Application configuration Class
'Handle Tag : App.config -> <applicationList>
Public Class ApplicationListCollection
Inherits ConfigurationElementCollection

Protected Overloads Overrides Function CreateNewElement() As System.Configuration.ConfigurationElement
  Return New ApplInfoConfig()
End Function

Protected Overrides Function GetElementKey(ByVal element As System.Configuration.ConfigurationElement) As Object
  Return CType(element, ApplInfoConfig).name()
End Function

End Class
End Namespace
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1 回答 1

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似乎问题出app.config在您为自定义部分指定处理程序的行上：

<section name="applicationList" type ="AbraMain.MyConfigHandler.ApplicationListCollection"/>

自定义处理程序类型的类型声明还需要包括可以在其中找到它的程序集。否则，它将尝试在默认System.Configuration程序集中找到它。这也是您收到的错误消息。

因此，您也可以通过包含程序集的名称来解决它。我假设您的程序集名为AbraMain. 然后您需要将该行更改为：

<section name="applicationList" type ="AbraMain.MyConfigHandler.ApplicationListCollection, AbraMain"/>

但是，您似乎还有第二个问题。对于配置部分，您需要有一个处理程序来实现ConfigurationSection。

所以你需要添加一个新类来做到这一点：

Public Class ApplicationList  
Inherits ConfigurationSection

' You need to do the implementation. There are plenty of
' examples available on-line.

End Class

然后指向你app.config使用它：

<section name="applicationList" type ="AbraMain.MyConfigHandler.ApplicationList, AbraMain"/>
于 2015-04-17T03:17:52.530 回答