private void button1_Click(object sender, EventArgs e) { if (textBox3.Text.Length > 1) { SQLManager.AddGame(currentPublisher, textBox3.Text, richTextBox1.Text, numericUpDown1.Value.ToString()); dataGridView1.Rows.Clear(); List <GameItem> publisherGames = SQLManager.GetPublisherGames(currentPublisher); foreach (GameItem publisherGame in publisherGames) { dataGridView1.Rows.Add(publisherGame.title, publisherGame.price + "$"); } textBox3.Text = null; richTextBox1.Text = null; numericUpDown1.Value = 12; } }