private void button2_Click(object sender, EventArgs e) { UpdateDBLin ul = new UpdateDBLin(); if (data == 0) { MessageBox.Show("Select A Cell"); } else { ul.DeleteUserPrediction(ui.UName, data); MessageBox.Show("Successfull"); } dataGridView1.DataSource = null; dataGridView2.DataSource = null; PredictionHistory_Load(this, null); }