<PackageReference Include="System.Configuration.ConfigurationManager" Version="5.0.0-rc.2.20475.5" />

PropertyInformationCollection

Contains a collection of PropertyInformation objects. This class cannot be inherited.
public PropertyInformation this[string propertyName] { get; }

Gets the PropertyInformation object in the collection, based on the specified property name.

public void CopyTo(PropertyInformation[] array, int index)

Copies the entire PropertyInformationCollection collection to a compatible one-dimensional Array, starting at the specified index of the target array.