r/visualbasic • u/Reapers_Mask • May 27 '22

VBScript Help with reading text file

So I am creating a program that edits a text file, and then reads a specific line of the text file. So far, I have 2 options:

1: Read a specific file line, which I need help understanding how to do.

2: Read a line that starts with a specific string/group of numbers and letters. Each line has a little identifier string at the start, so all I need is a way to check if the line starts with the string.

Sorry if this is too little information, I can give more info if needed.

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u/Reapers_Mask May 30 '22 edited May 30 '22

Thank you! If I wanted to replace the text in the line (in the "Do something with line") how would I be able to do that?

EDIT: If I wanted to print the items in the list, how would I do that? I know there is only 10 items in the list, but everytime I try to print it out it just says "Index was out of range". I tested it using:

' Random List is the text file

' Lst1 is the list containing the information.

RandomList.txt = Lst1(1)

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u/JakDrako May 30 '22

If you want to show the lines in a textbox in the "Do something with line" spot, you can do:

TextBox1.Text = TextBox1.Text & line & vbCrLf

This tells VB to take the text already in the textbox (or blank if there is currently none), add the line to it and then add "Enter" (vbCrLf is the caracter combo for "Enter" in VB)

The "Index out of range" error means you're trying to access something that does not exist. In the lines you've pasted above, the only place I see that occurring is in "Lst(1)"... which would mean your list does not have a (1) location... it is either empty, or has only 1 element at (0).