As per subject...
This question is related to
c#
newline
linefeed
carriage-return
\n is the line break used by Unix(-like) systems, \r\n is used by windows. This has nothing to do with C#.
\n = LF (Line Feed) // Used as a new line character on Unix
\r = CR (Carriage Return) // Used as a new line character on Mac
\r\n = CR + LF // Used as a new line character on Windows
(char)13 = \r = CR
Environment.NewLine = any of the above code based on the operating system
// .NET provides the Environment class which provides many data based on operating systems, so if the application is built on Windows, and you use CR + LF ("\n\r" instead of Environment.NewLine) as the new line character in your strings, and then Microsoft creates a VM for running .NET applications in Unix, then there will be problem. So, you should always use Environment.NewLine when you want a new line character. Now you need not to care about the operating system.
They are just \r\n and \n are variants.
\r\n is used in windows
\n is used in mac and linux
Basically comes down to Windows standard: \r\n and Unix based systems using: \n
It's about how the operating system recognizes line ends.
Morale: if you are developing for Windows, stick to \r\n. Or even better, use C# string functions to deal with strings which already consider line endings (WriteLine, and such).
The Difference
There are a few characters which can indicate a new line. The usual ones are these two:
* '\n' or '0x0A' (10 in decimal) -> This character is called "Line Feed" (LF).
* '\r' or '0x0D' (13 in decimal) -> This one is called "Carriage return" (CR).
Different Operating Systems handle newlines in a different way. Here is a short list of the most common ones:
* DOS and Windows
They expect a newline to be the combination of two characters, namely '\r\n' (or 13 followed by 10).
* Unix (and hence Linux as well)
Unix uses a single '\n' to indicate a new line.
* Mac
Macs use a single '\r'.
Taken from Here
"\n" is just a line feed (Unicode U+000A). This is typically the Unix line separator.
"\r\n" is a carriage return (Unicode U+000D) followed by a line feed (Unicode U+000A). This is typically the Windows line separator.
Source: Stackoverflow.com