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In this example we will read the contents of a file in C#
Example
The ‘StreamReader’ is used to position the file pointer at the beginning of the file.
We then use BaseStream.Seek() function to read until the end of the file is encountered.
Using a while loop we check that the value of ‘str’ variable is not equal to null. If the condition is true, then the loop is iterated.
The ReadLine() function is then used to read the content in the file and once this is complete we close the writer and file.
using System;
using System.IO;
namespace ConsoleApp1
{
class Program
{
static void Main(string[] args)
{
FileStream fs = new FileStream("testfile.txt", FileMode.Open, FileAccess.Read);
//Position the File Pointer at the Beginning of the File
StreamReader sr = new StreamReader(fs);
//Read till the End of the File is Encountered
sr.BaseStream.Seek(0, SeekOrigin.Begin);
string str = sr.ReadLine();
while (str != null)
{
Console.WriteLine("{0}", str);
str = sr.ReadLine();
}
//Close the Writer and File
sr.Close();
fs.Close();
Console.Read();
}
}
}
Based on the contents of the file, this is what was seen in the console window
This is my test file with some test text in it Another line of text 1234560912 maxchsarp.com