Search and Read text from .txt file

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Hi,
I am using following code to read text from a .txt file. But I donot know how to perform search within file and how to read a specific line in the text file, based on search.

VB

Dim vrDisplay = My.Computer.FileSystem.ReadAllText(CurDir() & "\keys.txt")
    MsgBox(vrDisplay)

For example if I want to read the line that contains word "Start", how to do that.

Thanks

Posted 30-Jul-11 7:04am

Furqan Sehgal

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Аslam Iqbal · Answer 1 · 2011-07-30T08:40:00

Try this simple solution:

VB

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
       'A file named keys.txt contains
       '        afcd b g f
       'rgb          thh h h
       'h hg hg
       '        h(hg)
       '        hg()
       '        h()
       '        hg(hjnthbrggfgn)
       'Start your are ******
       'end no one can do that
       Dim filedata = My.Computer.FileSystem.ReadAllText(CurDir() & "\keys.txt")
       Dim sp() = filedata.Split(vbNewLine)
       Dim IndexOfStart = Array.FindIndex(Of String)(sp, AddressOf CheckStr)
       Dim linecontainigStart = sp(IndexOfStart)
   End Sub

   Function CheckStr(ByVal line) As Boolean
       Dim tmp = InStr(line, "Start")
       If tmp > 0 Then
           Return True
       End If
       Return False
   End Function

Manas Bhardwaj · Answer 2 · 2011-07-30T07:10:00

Solution 1

Did you even try to look in Google [^]for how other people do this?

I see quite a few promising links in there. Try some of those, if you are still stuck; come back and someone will help you.

Posted 30-Jul-11 7:10am

Manas Bhardwaj