<PackageReference Include="System.Configuration.ConfigurationManager" Version="7.0.0-preview.3.22175.4" />

SettingsBase

public abstract class SettingsBase
public virtual SettingsContext Context { get; }

public bool IsSynchronized { get; }

public virtual object this[string propertyName] { get; set; }

public virtual SettingsPropertyCollection Properties { get; }

public virtual SettingsProviderCollection Providers { get; }

protected SettingsBase()

public static SettingsBase Synchronized(SettingsBase settingsBase)

public virtual void Save()