public bool EditProduct(int productId, Product product)
 {
     try
     {
         using (DBAContext context = DBAContext.GetContext())
         {
             Product modifiedProduct = context.Products.SingleOrDefault(x => x.Id == productId);
             if (modifiedProduct == null)
             {
                 logger.Error("Product with id " + productId + " not exists.");
                 return(false);
             }
             modifiedProduct.Price       = product.Price;
             modifiedProduct.Photo       = product.Photo;
             modifiedProduct.Name        = product.Name;
             modifiedProduct.LastUpdated = DateTime.Now;
             context.SaveChanges();
             return(true);
         }
     }
     catch (Exception ex)
     {
         logger.Error("Error during modifying data in database." + ex.Message);
         ErrorMessage = "Error during modifying data in database." + ex.Message;
         return(false);
     }
 }
 public bool AddProduct(Product product)
 {
     try
     {
         using (DBAContext context = DBAContext.GetContext())
         {
             product.LastUpdated = DateTime.Now;
             context.Products.Add(product);
             int affectedRows = context.SaveChanges();
             return(affectedRows == 1);
         }
     }
     catch (Exception ex)
     {
         logger.Error("Error during inserting new data in database." + ex.Message);
         ErrorMessage = "Error during inserting new data in database." + ex.Message;
         return(false);
     }
 }
 public bool DeleteProduct(int productId)
 {
     try
     {
         using (DBAContext context = DBAContext.GetContext())
         {
             Product product = context.Products.SingleOrDefault(x => x.Id == productId);
             if (product == null)
             {
                 logger.Error("Product with id " + productId + " not exists.");
                 return(false);
             }
             context.Products.Remove(product);
             context.SaveChanges();
             return(true);
         }
     }
     catch (Exception ex)
     {
         logger.Error("Error during deleting data from database." + ex.Message);
         ErrorMessage = "Error during deleting data from database." + ex.Message;
         return(false);
     }
 }