C# StreamWriter

C# StreamWriter class is used to write characters to a stream in specific encoding. It inherits TextWriter class. It provides overloaded write() and writeln() methods to write data into file.

C# StreamWriter example

Let's see a simple example of StreamWriter class which writes a single line of data into the file.

1. using System;  
2. using System.IO;  
3. public class StreamWriterExample  
4. {  
5.     public static void Main(string[] args)  
6.     {  
7.         FileStream f = new FileStream("e:\\output.txt", FileMode.Create);  
8.         StreamWriter s = new StreamWriter(f);  
9.   
10.         s.WriteLine("hello c#");  
11.         s.Close();  
12.         f.Close();  
13.      Console.WriteLine("File created successfully...");  
14.     }  
15. }  

Output:

File created successfully...

Now open the file, you will see the text "hello c#" in output.txt file.

output.txt:

hello c#