C# Language Tutorial => File and Stream I/O

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Introduction

Manages files.

Syntax

new System.IO.StreamWriter(string path)
new System.IO.StreamWriter(string path, bool append)
System.IO.StreamWriter.WriteLine(string text)
System.IO.StreamWriter.WriteAsync(string text)
System.IO.Stream.Close()
System.IO.File.ReadAllText(string path)
System.IO.File.ReadAllLines(string path)
System.IO.File.ReadLines(string path)
System.IO.File.WriteAllText(string path, string text)
System.IO.File.WriteAllLines(string path, IEnumerable<string> contents)
System.IO.File.Copy(string source, string dest)
System.IO.File.Create(string path)
System.IO.File.Delete(string path)
System.IO.File.Move(string source, string dest)
System.IO.Directory.GetFiles(string path)

Parameters

Parameter	Details
path	The location of the file.
append	If the file exist, true will add data to the end of the file (append), false will overwrite the file.
text	Text to be written or stored.
contents	A collection of strings to be written.
source	The location of the file you want to use.
dest	The location you want a file to go to.

Remarks

Always make sure to close Stream objects. This can be done with a using block as shown above or by manually calling myStream.Close().
Make sure the current user has necessary permissions on the path you are trying to create the file.
Verbatim strings should be used when declaring a path string that includes backslashes, like so: @"C:\MyFolder\MyFile.txt"

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