<PackageReference Include="System.Configuration.ConfigurationManager" Version="8.0.1" />

ConfigurationElementProperty

public sealed class ConfigurationElementProperty
Specifies the property of a configuration element. This class cannot be inherited.
public ConfigurationValidatorBase Validator { get; }

Gets a ConfigurationValidatorBase object used to validate the ConfigurationElementProperty object.

public ConfigurationElementProperty(ConfigurationValidatorBase validator)

Initializes a new instance of the ConfigurationElementProperty class, based on a supplied parameter.