Environment.NewLine

https://docs.microsoft.com/en-us/dotnet/api/system.environment.newline?view=netframework-4.7.2

https://stackoverflow.com/questions/1015766/difference-between-n-and-environment-newline

Answer1

Exact implementation of Environment.NewLine from the source code:

The implementation in .NET 4.6.1:

/*===================================NewLine====================================
**Action: A property which returns the appropriate newline string for the given
**        platform.
**Returns: \r\n on Win32.
**Arguments: None.
**Exceptions: None.
==============================================================================*/
public static String NewLine {
    get {
        Contract.Ensures(Contract.Result<String>() != null);
        return "\r\n";
    }
}

source

---

The implementation in .NET Core:

/*===================================NewLine====================================
**Action: A property which returns the appropriate newline string for the
**        given platform.
**Returns: \r\n on Win32.
**Arguments: None.
**Exceptions: None.
==============================================================================*/
public static String NewLine {
    get {
        Contract.Ensures(Contract.Result() != null);
#if !PLATFORM_UNIX
        return "\r\n";
#else
        return "\n";
#endif // !PLATFORM_UNIX
    }
}

source (in System.Private.CoreLib)

public static string NewLine => "\r\n";

source (in System.Runtime.Extensions)

Answer2

As others have mentioned, Environment.NewLine returns a platform-specific string for beginning a new line, which should be:

• "\r\n" (\u000D\u000A) for Windows
• "\n" (\u000A) for Unix
• "\r" (\u000D) for Mac (if such implementation existed)

Note that when writing to the console, Environment.NewLine is not strictly necessary. The console stream will translate "\n" to the appropriate new-line sequence, if necessary.

Just a note, that would be old macs; new (OSX) macs use \n