Thanks for the replies. I experimented with the ListView - 30,000 thousand lines with no problem. Since most users will probably apply some heavy filtering, there shouldn't be any problem. I don't even have to use virtual mode. I'll try out the datagridview to see which is easier to use.

Thanks a lot. Its working great.

Not a problem. For your information - the using statement here triggers a Dispose when the code reaches the end of the code block (which was the point I was trying to make). "WPF has many lovers. It's a veritable porn star!" - Josh Smith My blog | My articles | MoXAML PowerToys

th eproblem seems to be with another control teking focus. Thanks anyway.

Only yesterday there was an item (I believe regarding "mailto:") with some buffer limited to some 2048 bytes; I guess you are hitting the same limit. :) Luc Pattyn [My Articles]