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C# program to read all lines of a text file
In this C# program, we are going to learn how to read all lines of a text file? To read all lines, we use ReadAllLines() method of File class.
Submitted by IncludeHelp, on November 08, 2017
Give a text file and we have to read it’s all lines using C# program.
File.ReadAllLines()
This is a method of "File class, which returns all lines (array of strings) from a text file.
Syntax:
String[] ReadAllLines(string filename);
Parameter(s):
- filename - name of the file.
Return value:
- This method return array of string, in which every element of array contains a line.
Program
using System;
using System.IO;
namespace ConsoleApplication1
{
class Program
{
static void Main()
{
int i = 0;
string[] line;
line = File.ReadAllLines("ABC.TXT");
for (i = 0; i < line.Length; i++)
{
Console.WriteLine(line[i]);
}
}
}
}
Output
This is Line 1.
This is Line 2.
This is Line 3.
This is Line 4.
This is Line 5.
Note: In above program, we need to remember, when we use "File" class, System.IO namespace must be included in the program.
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