StreamWriter Class in C#

January 12, 2022 C#

In this post, you will learn how to work with the StreamWriter class so that you can use that same knowledge and thus evolve.

this class (belonging to System.IO library) aims to implement a writing mode so that characters can be written in a stream (file) according to a specific encoding.

`StreamWriter (object).Write()`	Write all its contents to the file without breaking the line
`StreamWriter (object).WriteLine()`	Write all your content to the file and change the line
`StreamWriter (object).Close()`	Terminate existing link with the given file

using guarantees the correct use of the mechanism that frees resources that are not being managed/used.

using System.Collections.Generic;
using System.IO;

namespace Base {
  class StreamWriterClass {
    private StreamWriter writeFile;
    private List<string> countries = new List<string>() {
      "Portugal",
      "Brazil",
      "Spain",
      "France",
      "Italy",
      "Australia",
      "India"
    };

    public void Run() {
      /*
        writeFile = new StreamWriter("File.txt");

        foreach (var country in countries)
          writeFile.WriteLine(country);

        writeFile.Close();
      */

      using (writeFile = new StreamWriter("File.txt")) {
        foreach (var country in countries)
          writeFile.WriteLine(country);
      }
    }
  }
}

Don’t forget to watch the video and you can always read this post in Portuguese.

StreamWriter Class in C#

Happy coding!