Problem with putting up conditionals for splitting a text file

[rocking]

Hi Guys,

I am working to achieve something that lokks really simple , but it actually sint.
I have I text tab delimited file. in every line of that file at the same position in every row of the file I will have a bit that I would want to compare against 23 values (I will call them criteria). So if on every row the string I need matches one of tjhese values then that row will be written in File1.Txt if that value doesn`t match any of the criteria the whole row will be sent to File2.txt.
So far managed to get the original file written in the same format in a newly created file.
I have an idea of how to get the functionality I described working but am stuck with correct syntax.
Here is what I have so far:

 Dim fs As New FileStream("C:\Original.txt", FileMode.Open, FileAccess.Read)
 
 
        RichTextBox1.Text = ""
        Dim d As New StreamReader(fs)
 
        d.BaseStream.Seek(0, SeekOrigin.Begin)
 
        While d.Peek() > -1
            Dim s As String = d.ReadLine()
 
            If s.Length > 1000 Then
 
 
                s = s.Remove(1000)
 
            End If
 
 
 
 
            RichTextBox1.Text &= s & Environment.NewLine
 
 
        End While
 
 
 
        d.Close()
 
        Dim fs1 As New FileStream("C:\File1.txt", FileMode.Create, FileAccess.Write)
        Dim ss As New StreamWriter(fs1)
        ss.WriteLine(RichTextBox1.Text)
        ss.Close()
 
 
 
 
  End Sub
 

Now I will need to declare every single row in RichTextBox1 as String then will have to get the bit I need will have to declare that as well(I will need from every row the string taht is between characters 96 and 104), also where do I keep the 23 criteraia values.
I am lost totaly , I have no idea how would that look like.
If someone can help here would be great
Thank you

[iam_clint]

Well you need to start at the beginning
1. Load the file
2. Split by tab
3. Loop each value and put it against some criteria
4. Write row to new text file


for step 3 I would try and use regular expressions http://www.regular-expressions.info/