Question

I have a file with 4 fields.

A,B,C,D

I want to only extract the 4th Field and change it to “E”

Is there anyway to accomplish this?

Answer 1

Assuming that the values don’t contain commas, read in the file using FileSystemObject (FSO), then Split each line on commas. Change the resulting array of 4 values as needed, then join it together as a comma separated string again. When you’ve done all the changes, write the data back out to a file using FSO.

So something like:

Set outputFile = fso.OpenTextFile(FileName1, ForWriting, True)
Set inputFile = fso.OpenTextFile(FileName2, ForReading)
Do While inputFile.AtEndOfStream <> True
    arr = Split(inputFile.ReadLine, ",")
    arr(3) = "E"
    outputString = Join(arr, ",")
    outputFile.WriteLine outputString
Loop

Please note, the code is completely untested and written mostly from memory so is almost certainly not correct but just to give you an idea.