how to read text from a text file line by line in c#

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1.80/5 (2 votes)

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i am a beginner..
i need to read a text file line by line in the following way =>

read the first line>print it on console>carry out some function like myFunction(line)>print on the console what the function gives out>then read the next line>................

no complicated answers plz.
i know im a noob.. dont tell me that (-_-)

Posted 26-Jan-16 4:04am

Ratul Thakur

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Patrice T 26-Jan-16 10:16am

At least try to do it yourself. and publish your code when you are stuck.
Advice: Do basic research about your problem before asking.

Kevin Marois 26-Jan-16 10:17am

He DID basic research. He posted his question here

Kevin Marois 26-Jan-16 10:18am

See this:

http://lmgtfy.com/?q=how+to+read+text+from+a+text+file+line+by+line+in+c%23

3 solutions

Solution 2

Use File.Open[^] to get a stream

Create an instance of StreamReader[^] for that stream.

Use ReadLine[^] method to read the file line by line, using EndOfStream Property[^] to see if you've read the whole file.

Posted 26-Jan-16 4:24am

F-ES Sitecore

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koolprasad2003 · Accepted Answer · 2016-01-26T19:31:00

Solution 3

it is bit simple using streamreader, see below snippet

C#

int counter = 0;
string line;

// Read the file and display it line by line.
System.IO.StreamReader file = 
   new System.IO.StreamReader("c:\\test.txt");
while((line = file.ReadLine()) != null)
{
   Console.WriteLine (line);
   //call your function here
   counter++;
}

file.Close();

// Suspend the screen.
Console.ReadLine();

Posted 26-Jan-16 19:31pm

koolprasad2003

Comments

Ratul Thakur 28-Jan-16 5:31am

ya i know this
the same is on microsoft's site.
i studied a bit about streamreader nd found the solution.
thanks yall. :-)

OriginalGriff · Accepted Answer · 2016-01-26T04:22:00

Solution 1

There are a couple of ways: The StreamReader class has a ReadLine method for example.
But the simplest way is to read the lot at once:

C#

string[] lines = File.ReadAllLines(@"D:\Temp\MyFile.txt");
foreach (string line in lines)
   {
   Console.WriteLine(line);
   string result = DoSomething(line);
   Console.WriteLine(result);
   }

Posted 26-Jan-16 4:22am

OriginalGriff

Comments

ZurdoDev 26-Jan-16 10:24am

Exactly. +5.

Arasappan 27-Jan-16 1:53am

mmmm

Ratul Thakur 28-Jan-16 5:32am

this works well ..thanks

OriginalGriff 28-Jan-16 6:16am

You're welcome!