public static void SetData(
            List<VendorInformation> vendors,
            List<MeasureInformation> measures,
            List<ProductInformation> products)
        {
            Database.SetInitializer(new MigrateDatabaseToLatestVersion<SqlServerEntities, Configuration>());
            using (var db = new SqlServerEntities())
            {
                foreach (var vend in vendors)
                {
                    db.Vendors.Add(new Vendor
                    {
                        VendorId = vend.VendorId,
                        VendorName = vend.VendorName
                    });
                }

                foreach (var meas in measures)
                {
                    db.Measures.Add(new Measure
                    {
                        MeasureId = meas.MeasureId,
                        MeasureName = meas.MeasureName
                    });
                }

                foreach (var prod in products)
                {
                    db.Products.Add(new Product
                    {
                        ProductName = prod.ProductName,
                        BasePrice = (decimal)prod.BasePrice,
                        MeasureId = prod.MeasureId,
                        VendorId = prod.VendorId
                    });
                }

                db.SaveChanges();
            }
        }
        public static void SetDataFromXls(List<List<SaleInfo>> reports)
        {
            Database.SetInitializer(new MigrateDatabaseToLatestVersion<SqlServerEntities, Configuration>());
            using (var db = new SqlServerEntities())
            {
                foreach (var file in reports)
                {
                    foreach (var rep in file)
                    {
                        var supermarket = db.Supermarkets.FirstOrDefault(x => x.SupermarketName == rep.Location);

                        if (supermarket == null)
                        {
                            supermarket = new Supermarket { SupermarketName = rep.Location };
                            db.Supermarkets.Add(supermarket);
                        }

                        var sale = new Sale
                        {
                            ProductId = rep.ProductId,
                            Supermarket = supermarket,
                            Date = rep.SaleDate,
                            Quantity = rep.Quantity,
                            UnitPrice = rep.UnitPrice,
                            Sum = rep.Sum
                        };

                        db.Sales.Add(sale);
                        db.SaveChanges();
                    }

                }

            }
        }