protected override string CheckAddability()
 {
     return(TargetTableData.NoOptions() ? "The table '" + TargetDBTable + "' is currently empty" : "");
 }
 // Same functions as DualInput tables
 protected override string CheckAddability()
 {
     return(CBInputs.NoOptions() ? "The table '" + TargetToolTable + "' is currently empty" : "");
 }