<PackageReference Include="System.Configuration.ConfigurationManager" Version="5.0.0-preview.1.20120.5" />

SettingsContext

public class SettingsContext : Hashtable
Provides contextual information that the provider can use when persisting settings.
using System.Collections; using System.Runtime.Serialization; namespace System.Configuration { public class SettingsContext : Hashtable { public SettingsContext() { } protected SettingsContext(SerializationInfo serializationInfo, StreamingContext streamingContext) : base(serializationInfo, streamingContext) { throw new PlatformNotSupportedException(); } } }