Read from file line by line

[denislagoda]

I am a beginer.

I need to read a TXT file line by line

How to do it?

 

[rowe_newsgroups]

I am a beginer.

I need to read a TXT file line by line

How to do it?

Look up the StreamReader and it's ReadLine method.

Thanks,

Seth Rowe

 

[Guest]

StreamReader reader = new StreamReader(filePath);//filepatj="C:/aa.txt"
while (!reader.EndOfStream)
{
InputFile = reader.ReadLine();
// do what u want

}
this ReadLine() fuctionread the line by line and return one line at a time
as string.

 

[John Duval]

I am a beginer.

I need to read a TXT file line by line

How to do it?

Hi, try something like this:

static void Main()
{
FileStream fileStream = null;
StreamReader streamReader = null;
try
{
fileStream = new FileStream(@"c:\foo.txt", FileMode.Open);
streamReader = new StreamReader(fileStream);
while (true)
{
string line = streamReader.ReadLine();
if (string.IsNullOrEmpty(line))
break;
}
}
finally
{
if (streamReader != null)
streamReader.Close();
if (fileStream != null)
fileStream.Close();
}
}

Hope it helps,
John

 

[denislagoda]

StreamReader reader = new StreamReader(filePath);//filepatj="C:/aa.txt"
while (!reader.EndOfStream)
{
InputFile = reader.ReadLine();
// do what u want

}

StreamReader.EndOfStream - didnt find in MSDN

 

[Martijn Mulder]

I need to read a TXT file line by line

using System;
using System.IO;
class TextFileExplorer
{
TextFileExplorer(string filename)
{
try
{
StreamReader streamreader=new
FileInfo(filename).OpenText();
string text=streamreader.ReadLine();
while(text!=null)
{
Console.WriteLine(text);
text=streamreader.ReadLine();
}
streamreader.Close();
}
catch
{
Console.WriteLine("File {0} does not exist",filename);
}
}
static void Main()
{
new TextFileExplorer(@"C:\somefile.txt");
}
}

 

[Guest]

use system.IO namespace
as
using system.IO
it will work

 

[denislagoda]

http://msdn.microsoft.com/library/r...tml/frlrfSystemIOStreamReaderMembersTopic.asp

? where EndOfStream

 

[Guest]

http://msdn2.microsoft.com/en-us/library/system.io.streamreader.endofstream.aspx
use this one endofstream is property of streamreader .
use it dont worry.

 

[Guest]

this propert is new .net 2.0

http://msdn.microsoft.com/library/r...tml/frlrfSystemIOStreamReaderMembersTopic.asp

? where EndOfStream

 

[denislagoda]

Where MSDN for framework 2.0 ?

 

[Guest]

click on link u will get it

http://msdn2.microsoft.com/en-us/library/system.io.streamreader.endofstream.aspx
use this one endofstream is property of streamreader .
use it dont worry.

 

[Guest]

http://msdn2.microsoft.com/

 

[Peter Duniho]

StreamReader.EndOfStream - didnt find in MSDN

Why not? Are you looking at the .NET 1.1 docs?

http://msdn2.microsoft.com/en-us/library/system.io.streamreader.endofstream.aspx

 

[Jon Skeet [C# MVP]]

StreamReader reader = new StreamReader(filePath);//filepatj="C:/aa.txt"
while (!reader.EndOfStream)
{
InputFile = reader.ReadLine();
// do what u want

}
this ReadLine() fuctionread the line by line and return one line at a time
as string.

It's better (IMO) to read until ReadLine returns null. There's no need
to have a separate "test then read":

string line;

while ( (line=reader.ReadLine()) != null)
{
...
}

 

[Hilton]

....or simply (and more correctly):

using (StreamReader sr = new StreamReader (filename))
{
string line;
while ((line = sr.ReadLine()) != null)
{
do stuff
}
}

Works with all versions of .NET and CF (to the best of my knowledge)

Hilton

 

[Guest]

StreamReader streamreader=new
FileInfo(filename).OpenText();

There are a StreamReader constructor that takes a filename as argument.

string text=streamreader.ReadLine();
while(text!=null)
{
Console.WriteLine(text);
text=streamreader.ReadLine();
}

The style:

String line;
while((line = sr.ReadLine()) != null)
{
...
}

is in many ways the standard way of doing it and by using
it you will make it easier for other to read your code.

Arne

 

[=?ISO-8859-1?Q?Arne_Vajh=F8j?=]

...or simply (and more correctly):

using (StreamReader sr = new StreamReader (filename))
{
string line;
while ((line = sr.ReadLine()) != null)
{
do stuff
}
}

Not only does it save a lot of source code and is much more
readable.

It does not abort reading when reaching an empty line, which
there are no indication that the original poster wanted.

Arne