Replace the string data from a file

Question

so you have pretty much read the title,

I want to make it so that any value in ResolutionSizeX= is going to become 1920 every single number.

Heres my code:

Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click

    My.Computer.FileSystem.WriteAllText("C:\Users\NarpZ\AppData\Local\FortniteGame\Saved\Config\WindowsClient\GameUserSettings.ini",
    My.Computer.FileSystem.ReadAllText("C:\Users\NarpZ\AppData\Local\FortniteGame\Saved\Config\WindowsClient\GameUserSettings.ini").Replace("ResolutionSizeX=", "ResolutionSizeX=1920"),
    False)

End Sub

What's your question? Is something not working as expected? What isn't working? Which step along the way is the first to fail? (Hint: Separate your operations into individual lines of code to observe them one at a time while debugging.) What data is in your file? Please specify the problem. — David, Jan 02 '19 at 13:09
I wanted every single number that is possible in it to become 1920, if it is like 1628 or 980 or 16 or 12034 you understand? — Alexandra, Jan 02 '19 at 13:14
what do you mean about "Can you do it in a text editor which supports regular expressions?" — Alexandra, Jan 02 '19 at 13:25
check this out to edit INI files - https://stackoverflow.com/questions/217902/reading-writing-an-ini-file — Ctznkane525, Jan 02 '19 at 13:33
Im doing this in visual basic. When I tried it, it didn't work. — Alexandra, Jan 02 '19 at 13:46
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For reference and more information please see [Is it OK to add \[Solved\] to the title of a question?](https://meta.stackexchange.com/q/116101) and [Should questions include "tags" in their titles?](https://meta.stackexchange.com/q/19190) Thank you! — Visual Vincent, Jan 02 '19 at 14:46

Thomas G · Accepted Answer · 2019-01-02T14:19:04.740

0

Untested but it should do the trick.

    Dim strFile As String = "C:\Users\NarpZ\AppData\Local\FortniteGame\Saved\Config\WindowsClient\GameUserSettings.ini"

  If System.IO.File.Exists(strFile) Then

    Dim arrLines() As String = IO.File.ReadAllLines(strFile)

    For i As Integer = 0 To arrLines.Length - 1
        If Strings.Left(arrLines(i),16)="ResolutionSizeX=" Then
            arrLines(i) = "ResolutionSizeX=1920" 
        End If
    Next

    System.IO.File.WriteAllLines(strFile, arrLines) 'SAVE

  End If

edited Jan 02 '19 at 14:19

answered Jan 02 '19 at 14:06

Thomas G

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It does the trick, but if I have something named LastUserConfirmedResolutionSizeX it changes that too to ResolutionSizeX. – Alexandra Jan 02 '19 at 14:14
@Narpzy adapted the code so it checks if the 16 first chars of the line are *ResolutionSizeX=*, and not simply contain the string – Thomas G Jan 02 '19 at 14:20
I just tried to do the same with LastUserConfirmedResolutionSizeX, and it didn't work, heres the code: If System.IO.File.Exists(strFile) Then Dim arrLines() As String = IO.File.ReadAllLines(strFile) For i As Integer = 0 To arrLines.Length - 1 If Strings.Left(arrLines(i), 16) = "ResolutionSizeX=" Then arrLines(i) = "ResolutionSizeX=1920" ElseIf Strings.Left(arrLines(i), 16) = "LastUserConfirmedResolutionSizeX=" Then arrLines(i) = "LastUserConfirmedResolutionSizeX=1920" End If Next System.IO.File.WriteAllLines(strFile, arrLines) 'SAVE End If – Alexandra Jan 02 '19 at 14:28
Remove the `File.Exists()` check. It's almost always counter-productive, and usually makes things slower; you're normally better off just handling the exception. – Joel Coehoorn Jan 02 '19 at 14:35
If you want to make it work with other variables, you have to adapt the 16 in the Left instruction. 16 is the number of chars in your string, including the = at the end – Thomas G Jan 02 '19 at 14:36
@JoelCoehoorn was fasted to code then a ctach try block (I have no VS here atm) :-) – Thomas G Jan 02 '19 at 14:37
ok, that helped me out. – Alexandra Jan 02 '19 at 14:41

Replace the string data from a file

1 Answers1