How to replace single line in text withot saving the file?

[Marko Danilovic]

I need to open some HTML file, then replace exact line of text with another, and then WITHOUT SAVING THE FILE (WriteAllLines( HTML01, lines)) to display in WebBrowser. My code in private sub of replacing the line is next:

        Dim lines() As String = System.IO.File.ReadAllLines(HTML01)
        lines(7) = "editovan HTML"
        WriteAllLines(HTML01, lines)   'without this line, just in RAM memory
        WebBrowser1.DocumentText = System.IO.File.ReadAllText(HTML01)

The file "HTML01" as already opened.

Thanks in advance!

[Marko Danilovic]

In the meantime I resolve the question by myself:

Imports System.IO.File
Imports System.IO
Imports System.Text

Public Class Form1

    Dim HTML01 As String = (CurDir() & "\10.html")
    Dim HTML02 As String

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        WebBrowser1.DocumentText = System.IO.File.ReadAllText(HTML01)
    End Sub

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

        Dim lines() As String = System.IO.File.ReadAllLines(HTML01)
        lines(7) = "edited HTML"

        Dim HTML02 As String = ""
        For i = 0 To 8 ' lines in HTML01 is 9
            If i = 8 Then
                HTML02 = HTML02 & lines(i)
            Else
                HTML02 = HTML02 & lines(i) & Chr(13) & Chr(10)
            End If
            'MsgBox("linija:" & i & " = " & lines(i))
        Next i

        'System.IO.File.WriteAllText(putanja, HTML02) - this line is no need it
        WebBrowser1.DocumentText = HTML02
        
    End Sub
End Class