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

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.linecou nt would be nice, but I'm not finding anything like that
anywhere.

Thanks
Nov 21 '05 #1
6 17428
"Daniel Kaseman" <da*@cfaith.com > schrieb:
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.


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.

--
M S Herfried K. Wagner
M V P <URL:http://dotnet.mvps.org/>
V B <URL:http://classicvb.org/petition/>

Nov 21 '05 #2
yes, but what is the syntax?

"Herfried K. Wagner [MVP]" <hi************ ***@gmx.at> wrote in message
news:ev******** ********@TK2MSF TNGP14.phx.gbl. ..
"Daniel Kaseman" <da*@cfaith.com > schrieb:
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.
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.

--
M S Herfried K. Wagner
M V P <URL:http://dotnet.mvps.org/>
V B <URL:http://classicvb.org/petition/>

Nov 21 '05 #3
"Daniel Kaseman" <da*@cfaith.com > schrieb:
yes, but what is the syntax?


Reading a text file line-by-line or blockwise with a progress indicator
<URL:http://dotnet.mvps.org/dotnet/faqs/?id=readfile&la ng=en>

--
M S Herfried K. Wagner
M V P <URL:http://dotnet.mvps.org/>
V B <URL:http://classicvb.org/petition/>
Nov 21 '05 #4
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.
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?
Where is the file that you have readed, in memory?
something like io.file.linecou nt would be nice, but I'm not finding
anything like that
anywhere.

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
Nov 21 '05 #5
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.

Nov 21 '05 #6
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
.InitialDirecto ry =
Environment.Get FolderPath(Envi ronment.Special Folder.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 (OpenFileDialog 1.FileName)
Do While sr.Peek() >= 0
TextBox1.Text += sr.ReadLine() & ControlChars.Cr Lf
intLines += 1
Loop
sr.Close()
MessageBox.Show (intLines, Me.Text)

I hope this helps

Crouchie1998
BA (HONS) MCP MCSE
Nov 21 '05 #7

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