C# Program to read all the lines one by one in a file

Use ReadAllLines() method to read all the lines one by one in a file.

Let’s say we have a file “new.txt” with the following lines.

One Two Three

Firstly, set the path of the file to be read.

String myPath = "new.txt";

Now add it under a string array to fetch the lines on by one.

String[] fLine = File.ReadAllLines(myPath);

Let’s say you need to fetch the first line. For that.

fLine[0]

The following is the complete example that reads lines one by one in a file.

Example

using System; using System.IO; public class Demo {    public static void Main() {       String myPath = "new.txt";       String[] fLine;       // array of lines in a file       fLine = File.ReadAllLines(myPath);       // read lines of a file       Console.WriteLine("Line 1: "+fLine[0]);       Console.WriteLine("Line 2: "+fLine[1]);       Console.WriteLine("Line 3: "+fLine[2]);       Console.WriteLine("Line 4 "+fLine[3]);    } }

Output

Line1: One Line2: Two Line3: Three Line4: Four