public async Task Delete(Guid Id)
        {
            var entity = _repository.FirstAsync(u=>u.Id == Id);
            await _repository.DeleteNowAsync(Id);
        }  

private TEntity BuildDeletedEntity(object key, bool isRealDelete = true)
        {
            // 读取主键
            var keyProperty = EntityType.FindPrimaryKey().Properties.AsEnumerable().FirstOrDefault()?.PropertyInfo;
            if (keyProperty == null) return default;

            // 创建实体对象并设置主键值
            var entity = Activator.CreateInstance<TEntity>();
            keyProperty.SetValue(entity, key);

            if (isRealDelete)
            {
                // 设置实体状态为已删除
                ChangeEntityState(entity, EntityState.Deleted);
            }

            return entity;
        }