What is streamreader and streamwriter class in C#

Question

What is streamreader and streamwriter class in C#?

Rajanikant Hawaldar · Answer

StreamReader and StreamWriter are found in the System.IO namespace. Both classes are useful when you want to read or write character-based data. Both of these classes deal with Unicode characters. StreamReader derives from the Abstract class TextReader and StreamWriter derives from TextWriter. C# StreamReader is used to read characters to a stream in a specified encoding. StreamReader.Read method reads the next character or next set of characters from the input stream. StreamReader is inherited from TextReader that provides methods to read a character block line or all content. The following code example creates a StreamReader and reads a file content one line at a time and displays to the console. If there is an exception the exception is displayed on the console. using System; using System.IO; using System.Text; class Program { static void Main(string[] args) { // File name string fileName = @C:\Temp\C#CornerMVPsList.txt; try { // Create a StreamReader using (StreamReader reader = new StreamReader(fileName)) { string line; // Read line by line while ((line = reader.ReadLine()) != null) { Console.WriteLine(line); } } } catch (Exception exp) { Console.WriteLine(exp.Message); } Console.ReadKey(); } } StreamWriter class in C# writes characters to a stream in a specified encoding. StreamWriter.Write() method is responsible for writing text to a stream. StreamWriter class is inherited from TextWriter class that provides methods to write an object to a string write strings to a file or to serialize XML. public static void WriteToFile() { using (StreamWriter sw = File.CreateText(@E:\Programming Practice\CSharp\Console	able.tbl)) { sw.WriteLine(Please find the below generated table of 1 to 10); sw.WriteLine(); for (int i = 1; i Note: There are few more method are there to do the same please refer article which written very well by @Mahesh Chand sir. https://www.c-sharpcorner.com/article/csharp-streamwriter-example/

Toufik El Azzaoui · Answer

Streams are used as an intermediate level between the application and the file. A StreamReader is used whenever data is required to be read from a file. A Streamwriter is used whenever data needs to be written to a file.