Thanks you! This has been bugging me for a couple of weeks. I don't know how I missed that property of the ListViewItem, but it seems to be what I'm looking for. Tim

Thanks for the idea. I will see what I can do. Tim

It appears once again I have gone the wrong way. I get caught up in arrays when I try to use C# in place where I don't have to. Instead of putting the items into an array, and then into the dialog box, I just put them into the dialog box when I get them. I thank the people who responded and helped me, I hope you don't think I wasted your time, as I did learn some new things that I think will be helpful in the future. One thing I did look into was the list class, but since the program I'm programming for only use .Net1.1, that doesn't work for this issue at this time. Once again Thanks. Tim

HI, With the try,catch and throw you can also use "finally" and within the finally block you can release the resources that have occupied memory. thanks, vikram Vicky

True. Thanks of the tips Guffa. I'm just starting, so help/tips are always appreciated. Tim

Here's a small recursive code for increasing a string. It's for increasing through Excel columns, so it also increases strings like "AD" or "ZZ". Use the method IncString: private string IncString(string s) { if (String.IsNullOrEmpty(s)) return "A"; if (s[s.Length - 1] == 'Z') { if (s.Length == 1) return "AA"; else return IncString(s.Substring(0, s.Length - 1)) + "A"; } else { if (s.Length == 1) return IncChar(s[0]).ToString(); else return s.Substring(0, s.Length - 1) + IncChar(s[s.Length - 1]).ToString(); } } private char IncChar(char c) { return (char)((int)c + 1); }

Hello Thank you for your kind complements. I'm always happy to help you anytime. What I got from your post is that your code didn't work out!! Why?? I though it did display that orbit thing, and all your problem was with the timer?? Sorry I don't have knowledge of Autocad, but I hope I helped you enough with the C# part!! Anyway, if you still want to work out your code, just tell me what a non-autocad problem -if any- would be. If you found a working code, I'd be happy to see it. Anyway, I wish you luck. Regards:rose: