private void cmbActsOn_SelectedIndexChanged(object sender, EventArgs e) { if (Working) { return; } FileChanged = true; Working = true; CurrentReq.UI_ActsOnCombo_Set(cmbActsOn.SelectedIndex); lstRequirements.Items[CurrentReqNum] = CurrentReq.DisplayString(); lstRules.Invalidate(); lstRequirements.Invalidate(); RefreshColorSample(); Working = false; }