实现自己的配置读取器

[HostProtection(SecurityAction.LinkDemand, MayLeakOnAbort = true)]

public class AddinConfigItem {
private string _dllFile;

public string DllFile {
get { return _dllFile; }
set { _dllFile = value; }
}

private string _addinClass;

public string AddinClass {
get { return _addinClass; }
set { _addinClass = value; }
}
}
配置文件：
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<configSections>
<section name="Assemblys"
type="Dcms.Common.AddinSectionHandler,Dcms.Common"/>
</configSections>
<Assemblys>
<Assembly dllFile="a.dll" addinClass="a" />
<Assembly dllFile="b.dll" addinClass="b" />
</Assemblys>
</configuration>
参考文章：http://www.codeproject.com/aspnet/ConfigSections.asp