count how many times a string is in a text file

[Matta25]

Does any one know how to count how many times a sting is in a text file using VB.net. If you have a sample of opening the file and count the string and then writing the number to a new text file, that would be great.
Thank you.

 

[earthandfire]

Not tested, but something like:

    Dim sr As New IO.StreamReader("[b]SourceFileName[/b]")
    Dim sw As New IO.StreamWriter("[b]TargetFileName[/b]")
    Dim rx As New System.Text.RegularExpressions.Regex("[b]PatternYouAreLookingFor[/b]")

    Dim s As String = sr.ReadToEnd
    sr.Close()
    sw.Write(rx.Matches(s).Count)
    sw.Close()

    sr = Nothing
    sw = Nothing
    rx = Nothing

should be close.


Hope this helps.