private void BFS_button_Click(object sender, EventArgs e) { Result_box.Text = String.Empty; if (DP.N == 0) { Result_box.Text = "Empty Matrix"; } else { DP.sortBFS(DP.N); int semester = 0; foreach (List <string> list in DP.resultBFS1) { semester++; Result_box.AppendText("Semester " + semester + "\t: "); foreach (string item in list) { Result_box.AppendText(item + " "); } Result_box.AppendText(Environment.NewLine); } } }