how to read a file in batches/parts/1000 lines at a time

[Assederot]

I am currently trying to make a method that can handle reading in large XML files. All i need is a method that would loading in say 1000 lines at a time or in small batches.I have been looking at streamreaders, xmlreaders and filestreams, I have seen some mentions of just keeping the stream open while processing data to get what i need but i cant seem to get my head round it.I have spent a long time checking the similar questions but can seem to find anything that will help me.ps. first thought i was thinking of doing a for loop around the readline to a counter of 1000 but cant seem to figure out how to continue from that 1000 lines to reading another 1000 etc until the end of the file.