Question

我使用自定义处理程序AbraMain.MyConfigHandler在app.config中创建configSections

错误：

无法加载类型＆＃39; AbraMain.MyConfigHandler.ApplicationListCollection＆＃39;来自assembly＆System; System.Configuration，Version = 4.0.0.0，Culture = neutral，PublicKeyToken = b03f5f7f11d50a3a＆＃39;。＆＃34;：＆＃34; AbraMain.MyConfigHandler.ApplicationListCollection＆＃34;

的app.config

<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

Answer 1

似乎问题出在您为自定义部分指定处理程序的行app.config中：

<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含可在其中找到的程序集。否则，它将尝试在默认的System.Configuration程序集中找到它。这也是你说的错误信息。

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，您似乎遇到了第二个问题。对于配置部分，您需要有一个实现ConfigurationSection的处理程序。

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

然后指出您的app.config使用它：

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

自定义配置节处理程序无法找到处理程序

的app.config

MyConfigHandler.vb

1 个答案: