HOW do I count the Number of lines in a text file

  • Thread starter Thread starter Daniel Kaseman
  • Start date Start date
D

Daniel Kaseman

I'm using the streamreader stuff. I know how to write and append, but I
don't know how to get VB to return the number of lines that there are in the
sequential access file that I'm working with.

Example:
I've written 40 lines to the file. I know that, but how do I get the
computer to tell me how many lines I have writte to the file? something
like io.file.linecount would be nice, but I'm not finding anything like that
anywhere.

Thanks
 
Daniel Kaseman said:
I'm using the streamreader stuff. I know how to write and append, but I
don't know how to get VB to return the number of lines that there are in
the
sequential access file that I'm working with.
Click to expand...

You'll either maintain a counter variable while writing lines to the file or
read the file line-by-line using a 'StreamReader' in order to determine the
number of lines.
 
yes, but what is the syntax?

Herfried K. Wagner said:
You'll either maintain a counter variable while writing lines to the file or
read the file line-by-line using a 'StreamReader' in order to determine the
number of lines.
Click to expand...
 
I'm using the streamreader stuff.
Click to expand...
I know how to write and append, but I
don't know how to get VB to return the number of lines that there are in
the
sequential access file that I'm working with.
Click to expand...

You cannot write and append with a streamreader
Example:
I've written 40 lines to the file. I know that, but how do I get the
computer to tell me how many lines I have writte to the file?
Click to expand...

Where is the file that you have readed, in memory?
something like io.file.linecount would be nice, but I'm not finding
anything like that
anywhere.
Click to expand...
This I don't understand absolute not, what should it do, probably is the
file that you have readed in a kind of collection. You can get the
count/length from it.

Cor
 
In addition, if all the records are the same length, then you can get
the number of lines by dividing the file size by the record length.
 
There are two ways I would do this:

1)

Dim intLines As Integer = TextBox1.Lines.Length
MessageBox.Show(intLines, Me.Text)

2)

TextBox1.Text = ""
With OpenFileDialog1
.InitialDirectory =
Environment.GetFolderPath(Environment.SpecialFolder.Desktop)
.Filter = "Text Files (*.txt)|*.txt"
If .ShowDialog <> DialogResult.OK Then Exit Sub
End With
Dim intLines As Integer = 0
Dim sr As New IO.StreamReader(OpenFileDialog1.FileName)
Do While sr.Peek() >= 0
TextBox1.Text += sr.ReadLine() & ControlChars.CrLf
intLines += 1
Loop
sr.Close()
MessageBox.Show(intLines, Me.Text)

I hope this helps

Crouchie1998
BA (HONS) MCP MCSE
 
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