/// <summary>
        /// Inserting new rows into database
        /// </summary>
        /// <param name="rows"></param>
        protected void InsertRows(IEnumerable <Car> rows)
        {
            using (SampleDatabaseEntities db = new SampleDatabaseEntities())
            {
                try
                {
                    foreach (var item in rows)
                    {
                        CarsTable carsTable = new CarsTable();
                        carsTable.Factory   = item.Factory;
                        carsTable.Model     = item.Model;
                        carsTable.Warranty  = item.Warranty;
                        carsTable.ModelYear = DateTime.Now;
                        db.CarsTables.Add(carsTable);
                    }

                    db.SaveChanges();
                    StatusLabel.Text = "Import success!";
                }
                catch (Exception ex)
                {
                    StatusLabel.Text = "Problem with import: " + ex.Message;
                }
            }
        }
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        public void addCar_InsertItem()
        {
            var item = new CarsTable();

            TryUpdateModel(item);
            if (ModelState.IsValid)
            {
                using (SampleDatabaseEntities db = new SampleDatabaseEntities())
                {
                    db.CarsTables.Add(item);
                    db.SaveChanges();
                }
            }
        }
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 /// <summary>
 /// Deleting item
 /// </summary>
 /// <param name="Id"></param>
 public void carsGrid_DeleteItem(int Id)
 {
     using (SampleDatabaseEntities db = new SampleDatabaseEntities())
     {
         var item = new CarsTable {
             Id = Id
         };
         db.Entry(item).State = EntityState.Deleted;
         try
         {
             db.SaveChanges();
         }
         catch (DbUpdateConcurrencyException)
         {
             ModelState.AddModelError("",
                                      String.Format("Delete issue: item id {0} not found in database.", Id));
         }
     }
 }
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        /// <summary>
        /// Update item
        /// </summary>
        /// <param name="Id"></param>
        public void carsGrid_UpdateItem(int Id)
        {
            using (SampleDatabaseEntities db = new SampleDatabaseEntities())
            {
                CarsTable item = null;
                item = db.CarsTables.Find(Id);
                if (item == null)
                {
                    ModelState.AddModelError("",
                                             String.Format("Update issue: item id {0} not found in database.", Id));
                    return;
                }

                TryUpdateModel(item);

                if (ModelState.IsValid)
                {
                    db.SaveChanges();
                }
            }
        }