Stockinfo/StockDAL/StockRepository.cs

using DataDomain;
using DatamodelLibrary;
using StockDAL.Interface;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace StockDAL
{
    public class StockRepository : IStockRepository
    {
        public void SaveStockMember(StockMember stockMember)
        {
            using (var context = new StockContext())
            {
                var sm = context.Stocks.Add(stockMember);
                context.SaveChanges();
            }
        }

        public void UpdateActualPrice(int id, decimal price)
        {
            using var context = new StockContext();
            var entity = (from stk in context.Stocks
                          where stk.Id == id
                          select stk).FirstOrDefault();

            entity.ActValue = price;
            entity.ActDate = DateTime.Today;

            context.SaveChanges();
        }

        public IEnumerable<StockMember> GetAllStocks()
        {
            using var context = new StockContext();
            var output = context.Stocks;
            return output.ToList();
        }

        public IEnumerable<StockMember> GetAllRemainingStocks()
        {
            using var context = new StockContext();
            var output = (from stk in context.Stocks
                          where stk.SoldDate == null || stk.ActValue > 0
                          select stk).ToList();
            return output;
        }

        public void InsertMany(List<StockMember> stockMembers)
        {
            using var context = new StockContext();
            context.Stocks.AddRange(stockMembers);
            context.SaveChanges();
        }

    }
}