Sample

How do I get started

First configure DeepDiff to know what types you want to compare, in the startup of your application

var diffConfiguration = new DiffConfiguration(); diffConfiguration.Entity<Entity>() .HasKey(x => new { x.StartsOn, x.Name }) .HasValues(x => new { x.Price, x.Volume }) .HasMany(x => x.SubEntities) .OnInsert(cfg => cfg.SetValue(x => x.PersistChange, PersistChange.Insert)) .OnUpdate(cfg => cfg.SetValue(x => x.PersistChange, PersistChange.Update)) .OnDelete(cfg => cfg.SetValue(x => x.PersistChange, PersistChange.Delete)); diffConfiguration.Entity<SubEntity>() .HasKey(x => x.SubName) .HasValues(x => x.Energy) .OnInsert(cfg => cfg.SetValue(x => x.PersistChange, PersistChange.Insert)) .OnUpdate(cfg => cfg.SetValue(x => x.PersistChange, PersistChange.Update)) .OnDelete(cfg => cfg.SetValue(x => x.PersistChange, PersistChange.Delete)) var deepDiff = diffConfiguration.CreateDeepDiff();

Then in your application code

var result = deepDiff.DiffMany(existingEntities, newEntities); // result.Entities will contain 'diff' entities

Sample entities definition

public class Entity { public Guid Id { get; set; } // DB Key public DateTime StartsOn { get; set; } // Business Key public string Name { get; set; } // Business Key public decimal Price { get; set; } public int Volume { get; set; } public PersistChange PersistChange { get; set; } public List<SubEntity> SubEntities { get; set; } } public class SubEntity { public Guid Id { get; set; } // DB Key public string SubName { get; set; } // Business Key public int Energy { get; set; } public PersistChange PersistChange { get; set; } public Guid EntityId { get; set; } // Foreign Key } public enum PersistChange { None, Inserted, Updated, Deleted }