max size of textboxes?

im making a program that reads a line delimited file and displays it in a textbox. in larger files it seems to only display about 3000 lines before it cuts off the words? do textboxes have a max length? if so is there another textbox class with unlimited length or a way to fix the built in one?
thanks

VB6 or VB.Net?

In VB6, the max length is 64k I think.

How big are your lines? And I think a RTF Box (Rich Text Box) will handle much larger than that....

yeah its in vb6.

edit:
the rich text box seems to be able to hold almost unlimited amounts of data. however the program seems to crash when i try to open larger files usually greater than about 20 megs. any way to prevent this from happening?

......what kind of texts are you working with if their >20meg?

wordlists? dictionaries? if so, just split it up into smaller individual ones using some freeware that you can find on google

its probably crashing because of the sheer size of the file u r trying to open. even notepad will crash if you try to open a large file on winXP.

unfortunately im not able to split them up beacuse their are files of addresses for several mailing lists of the company i work for. mainly the purpose of the program is to go thru and verify each one exists and remove duplicate entries from merged lists so it needs to be the whole thing.