That's great. It all works - I can experiment further now I have a working example. Thanks for your help. Ted

Thanks for all the help - everything is working now. A quirk was that I had event handler for form plugged in from both code and form event handler properties which compiled okay but handler was called twice when run. regards, Ted Edwards

It is mostly the search I have trouble with. The problem is really me in that I should learn C# and Visual Studio properly. I never seem to have time, always pressure to make something work "quick and dirty". Ted Ted Edwards