The example files used here can be downloaded by clicking the file name: example1.txt, example1.csv, example1.xlsx. (For text format files, you can copy the content on the webpage and paste it into a ...

I assumed (my mistake) you wanted threadsafe code but based on your comment later about the file open mode it seems you may not.<BR><BR>My advice was to make the code threadsafe. Write it in such a ...