public void Seed() { var data = new SqLiteData(); var oldItems = data.GetAllProducTaxes(); foreach (var oldItem in oldItems) { data.Remove(oldItem); } data.SaveChanges(); var excelHander = new ExcelXlsHandler(); excelHander.ReadInitialDataFile( "Products$", product => { data.AddProductTax( new ProductTax { ProductName = product["Product Name"].ToString(), Amount = Random.NextDouble() * Random.Next(100, 200) }); }); data.SaveChanges(); }