about printpreview ..

Question

I load text document in listbox, no problem. the text file is loaded like a list, I mean, read string by string. the next step is print preview and print the listbox contents because the listbox contents and the text file are diffrent and the listbox has a temporal contens and this is my doubt, how can I show in the printpreviewdialog and printdialog the contents of my listbox??. thanks guys the site is cool..