如果使用EF6是
DbContext可以使用
ChangeTracker的
SaveChanges替代找到自定义类型的添加/修改的实体，例如IAuditedEntity。
public interface IAuditedEntity { string CreatedBy { get; set; } DateTime CreatedAt { get; set; } string LastModifiedBy { get; set; } DateTime LastModifiedAt { get; set; }}public override int SaveChanges() { var addedAuditedEntities = ChangeTracker.Entries<IAuditedEntity>() .Where(p => p.State == EntityState.Added) .Select(p => p.Entity); var modifiedAuditedEntities = ChangeTracker.Entries<IAuditedEntity>() .Where(p => p.State == EntityState.Modified) .Select(p => p.Entity); var now = DateTime.UtcNow; foreach (var added in addedAuditedEntities) { added.CreatedAt = now; added.LastModifiedAt = now; } foreach (var modified in modifiedAuditedEntities) { modified.LastModifiedAt = now; } return base.SaveChanges();}
