protected void OnRunFilter(object sender, EventArgs e)
        {
            bool   parseSuccess = true;
            string failfield    = "(";

            instructions = new List <ElementFilterInstruction> ();
            FiltSettings.Clear();

            foreach (FilterEntryBinder feb in filtEntBind)
            {
                if (feb.Check.Active)
                {
                    int ma; int mi;
                    if (!int.TryParse(feb.MaxEnt.Text, out ma))
                    {
                        parseSuccess = false;
                        failfield   += feb.id + "min val, ";
                    }
                    if (!int.TryParse(feb.MinEnt.Text, out mi))
                    {
                        parseSuccess = false;
                        failfield   += feb.id + "max val, ";
                    }
                    if (parseSuccess)
                    {
                        FiltSettings.Add(new OldFiltSettings(feb.id, mi, ma));
                        ElementFilterInstruction efil = new ElementFilterInstruction(feb.id, mi, ma);
                        instructions.Add(efil);
                    }
                }
            }

            if (parseSuccess)
            {
                MainData.RunElementFilter(instructions);
                this.Destroy();
            }
            else
            {
                MainData.ShowMessageWindow("The following entries were in error: " + failfield, false);
            }
        }