C# StreamReader

by Online Tutorials Library July 14, 2022

C# StreamReader

C# StreamReader class is used to read string from the stream. It inherits TextReader class. It provides Read() and ReadLine() methods to read data from the stream.

C# StreamReader example to read one line

Let’s see the simple example of StreamReader class that reads a single line of data from the file.

 using System; using System.IO; public class StreamReaderExample {     public static void Main(string[] args)     {         FileStream f = new FileStream(“e:\output.txt”, FileMode.OpenOrCreate);         StreamReader s = new StreamReader(f);          string line=s.ReadLine();         Console.WriteLine(line);          s.Close();         f.Close();     } } 

Output:

Hello C#

C# StreamReader example to read all lines

 using System; using System.IO; public class StreamReaderExample {     public static void Main(string[] args)     {         FileStream f = new FileStream(“e:\a.txt”, FileMode.OpenOrCreate);         StreamReader s = new StreamReader(f);          string line = “”;         while ((line = s.ReadLine()) != null)         {             Console.WriteLine(line);         }         s.Close();         f.Close();     } } 

Output:

Hello C# this is file handling

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