In C#, there is a Files class from the bSystem.IO namespace which enables us to work with files. Files class can be used by adding the namespace,
using System.IO;
Files.MethodName();Some methods of Files class are,
1. AppendText() – This method appends text at the end of an existing file.
2. Copy() – This method copies a file.
3. Create() – This method creates a file or overwrites an existing file.
4. Delete() – This method Deletes a file.
5. Replace() – This method replaces the content of a file with the content of another file.
6. ReadAllText() – Reads the contents of the file.
7. WriteAllText() – Creates a file and writes content in it, if the file already exists it overwrites it.
8. Exists() – This method checks whether the file exists or not.
using System.IO;
string writeText = "Hello World!"; // Create a text string.
File.WriteAllText("filename.txt", writeText); // Create a file and write the content of writeText to it.
string readText = File.ReadAllText("filename.txt"); // Read the contents of the file
Console.WriteLine(readText); // Output the content.