自定义配置部分键

Question

I have implemented custom config section like this

 <directorySettings>
   <domainConfigurationList>
     <domainConfiguration id="1" name="name1" url="http://www.google.com"/>
     <domainConfiguration id="2" name="name2" url="http://www.bing.com"/>
   </domainConfigurationList>
 </directorySettings>

I can set only one field as key:

    protected override object GetElementKey(ConfigurationElement element)
    {
        return ((DirectorySettingsConfigurationElement)element).Name;
    }

but I also need to have possibility to search using not only by key 'name' but also by field 'id'. Here is part of my DirectorySettingsConfigurationElementCollection :

    public DirectorySettingsConfigurationElement Get(string name)
    {
        return (DirectorySettingsConfigurationElement)BaseGet(name);
    }

    public DirectorySettingsConfigurationElement GetById(int id)
    {
        // ???
        return null;
    }

What is the best way to get my DirectorySettingsConfigurationElement by custom field (not by key)

Answer 1

There might be a more direct answer; but the way I've generally seen this done is by using a ConfigurationElementCollection ( http://msdn.microsoft.com/en-us/library/system.configuration.configurationelementcollection.aspx )

You'd get a collection of domainConfigurations and you'd be able to iterate across it or use a LINQ query to get the matching value.