<PackageReference Include="System.Data.SqlClient" Version="4.8.1" />

SqlNotificationInfo

public enum SqlNotificationInfo
This enumeration provides additional information about the different notifications that can be received by the dependency event handler.
namespace System.Data.SqlClient { public enum SqlNotificationInfo { AlreadyChanged = -2, Unknown, Truncate, Insert, Update, Delete, Drop, Alter, Restart, Error, Query, Invalid, Options, Isolation, Expired, Resource, PreviousFire, TemplateLimit, Merge } }