A ChangeSource property can be added and populated on your change entities, to store where change occured from.

1. Implement the IHasChangeSource<TChangeSource> interface on your change entity (ChangeSource is an enum in this example):

   public class UserChange : IChange<User>, IHasChangeSource<ChangeSource>
   {
   ...
   

2. Create a ChangeSourceProvider by inheriting the ChangeSourceProvider<TChangeSource> class and overriding the required method(s):

   public class MyChangeSourceProvider : ChangeSourceProvider<ChangeSource>
   {
    public override <ChangeSourceType> GetChangeSourceAsync()
    {
        return Task.FromResult(ChangeSource.ConsoleApp);
    }
   }
   

3. Add the UseChangeSource<TChangeSourceProvider, TChangeSource>() option to your DbContextOptions, specifying your ChangeSourceProvider and ChangeSource type:

   services.AddDbContext<MyDbContext>(options =>
   {
    options
        .UseSqlServerChangeTriggers(options =>
        {
            options.UseChangeSource<MyChangeSourceProvider, ChangeSource>()
        });
   }
   

4. Create a migration if required:

   dotnet ef migrations add ChangeSource
   

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• Migrations