• لیست محصولات فروخته شده
  
• درصد کمیسیون خام
  
• تاریخ فروش
  
• شعبه فروش
  
• نوع پرداخت 
  

public class DiscountCalculator 
{ 
    protected decimal CalculateGeneralDiscount() 
    { 
        // calculate general discount 
        return 0; 
    } 
    protected decimal AddSpecificDiscount(decimal baseDiscount) 
    { 
        // add specific discounts to base discount 
        return 0; 
    } 
    protected virtual decimal GetFinalDiscount() 
    { 
        var baseDiscount = CalculateGeneralDiscount(); 
        var addedDiscount = AddSpecificDiscount(baseDiscount); 
        return addedDiscount; 
    } 
}

public class CompanyDiscountCalculator: DiscountCalculator 
{ 
    protected override decimal AddSpecificDiscount(decimal baseDiscount) 
        { 
            // add some customer specific discounts to base discount 
            return 0; 
        } 
    } 
    public class PersonDiscountCalculator : DiscountCalculator 
    { 
        protected override decimal AddSpecificDiscount(decimal baseDiscount) 
        { 
            // calculate base discount for person 
            return 0; 
        } 
}

    public class EfTagService : ITagService
    {
        IUnitOfWork _uow;
        readonly IDbSet<Tag> _tags;

        public EfTagService(IUnitOfWork uow)
        {
            _uow = uow;
            _tags = _uow.Set<Tag>();
        }

        public bool CreateTag(Tag tag)
        {
            // ...
        }

        public List<Tag> GetTagsByName(string[] tagNames)
        {
            // return ...
        }

    }

public class EfPostService : IPostService
{
        IUnitOfWork _uow;
        readonly IDbSet<Post> _posts;
      
         //این قسمت
        private EfTagService _tagService;


        public EfPostService(IUnitOfWork uow)
        {
            _uow = uow;
            _posts = uow.Set<Post>();

             //این قسمت
            _tagService = new EfTagService(_uow);
        }

        public void AddTagsToPost(Post post, string[] tagsList)
        {
            if (post.Tags != null && post.Tags.Any())
                post.Tags.Clear();

             //این قسمت
            var listOfActualTags = _tagService.GetTagsByName(tagsList);
            var listOfActualTagNames = listOfActualTags.Select(x => x.Name.ToLower()).ToList();

            foreach (var tag in tagsList)
            {
                if (!listOfActualTagNames.Contains(tag.ToLowerInvariant().Trim()))
                {
                    Tag newTag = new Tag() { Name = tag };
                 
                      //این قسمت
                    _tagService.CreateTag(newTag);

                    post.Tags.Add(newTag);
                }
            }
            // ...
         
        }
}