private void btn_Delete_Click(object sender, EventArgs e) { Item food = new Item(); food.Food_ID = tbx_ID.Text; DialogResult dialogResult = MessageBox.Show("Do you want to delete this food?", "Warning!", MessageBoxButtons.YesNo); String uri = ""; IFood foodbll = (IFood)Activator.GetObject(typeof(IFood), uri); if (dialogResult == DialogResult.Yes) { if (foodbll.Delete_Food(food)) { dataGridView.DataSource = foodbll.Load_Item(); MessageBox.Show("Delete complete", "Result", MessageBoxButtons.OK); } } else if (dialogResult == DialogResult.No) { return; } }