如何让castle用connectionstring里的连接字符串?

.Net 2 connection strings

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <configSections>
    <section name="activerecord-asp-net-2.0"
             type="Castle.ActiveRecord.Framework.Config.ActiveRecordSectionHandler, Castle.ActiveRecord" />
  </configSections>
  <connectionStrings>
    <add name="Connstr1" connectionString="UID=sa;Password=saaaa;Initial Catalog=database;Data Source=192.168.1.10"/>
  </connectionStrings>
  <activerecord-asp-net-2.0>
    <config>
      <add key="hibernate.connection.driver_class" value="NHibernate.Driver.SqlClientDriver"/>
      <add key="hibernate.dialect" value="NHibernate.Dialect.MsSql2000Dialect"/>
      <add key="hibernate.connection.provider" value="NHibernate.Connection.DriverConnectionProvider"/>
      <add key="hibernate.connection.connection_string" value="ConnectionString = ${Connstr1}" />
    </config>
  </activerecord-asp-net-2.0>

</configuration>

官方的没有说得不过明白
(http://www.castleproject.org/activerecord/documentation/v1rc1/advanced/connstringdotnet2.html)

<configSections>
    <section name="activerecord"
             type="Castle.ActiveRecord.Framework.Config.ActiveRecordSectionHandler, Castle.ActiveRecord" />
    <section name="activerecord-asp-net-2.0"
             type="Castle.ActiveRecord.Framework.Config.ActiveRecordSectionHandler, Castle.ActiveRecord" />
</configSections>

<connectionStrings>
    <add name="Test" connectionString="Test Connection String"/>
</connectionStrings>

<activerecord-asp-net-2.0>
    <config>
        <add key="hibernate.connection.connection_string" value="ConnectionString = ${Test}" />
    </config>
</activerecord-asp-net-2.0>

加载
load

 IConfigurationSource source = System.Configuration.ConfigurationManager.GetSection("activerecord-asp-net-2.0") as IConfigurationSource;
            ActiveRecordStarter.Initialize(source, typeof(Admin));