<PackageReference Include="System.Configuration.ConfigurationManager" Version="7.0.0" />

DictionarySectionHandler

Simple dictionary config factory config is a dictionary mapping key->value <add key="name" value="text"> sets key=text <remove key="name"> removes the definition of key <clear> removes all definitions
protected virtual string KeyAttributeName { get; }

Make the name of the key attribute configurable by derived classes.

protected virtual string ValueAttributeName { get; }

Make the name of the value attribute configurable by derived classes.

public virtual object Create(object parent, object context, XmlNode section)

Given a partially composed config object (possibly null) and some input from the config system, return a further partially composed config object