large file handler

how can i read large files and write large amounts of data from a string? the large files that cant be opened with notepad.

[Clearcode]

Notepad can't deal with very large files because it is a 16 bit application. In 32 bit visual basic a string can be about 2 billion characters long which should be sufficient for any file you need :-).
You could knock together an editor fairly quickly with the rich text box control - but you might find it quicker just to use "Wordpad".