/// <summary> /// Clears the drawing panel. /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void btn_clear_Click(object sender, EventArgs e) { DrawingPanelHelper.ClearPanel(); NodeHolder.EmptyAllNodes(); EdgeHolder.EmptyAllEdges(); tb_console.Clear(); cb_choose_alg.Enabled = true; if (cb_choose_alg.SelectedIndex == -1) { cb_choose_alg.SelectedIndex = 1; } }