private void CreateLion_Click(object sender, EventArgs e) { amountoflions += 1; listBox.Items.Add(Convert.ToString(LionNonlead.Name()) + Convert.ToString(amountoflions) + " Energy:" + (Convert.ToString(LionNonlead.Energy()))); if (createTable == true) { dtbl.Columns.Add("Animal"); dtbl.Columns.Add("Energy"); dataGridView.DataSource = dtbl; dtbl.Rows.Add(Convert.ToString(LionNonlead.Name()) + Convert.ToString(amountoflions), LionNonlead.Energy()); createTable = false; } else { dataGridView.DataSource = dtbl; dtbl.Rows.Add(Convert.ToString(LionNonlead.Name()) + Convert.ToString(amountoflions), LionNonlead.Energy()); } }