C# Environment.NewLine

Use the Environment.NewLine property from the System namespace. NewLine equals \r\n.

Environment.NewLine. A newline on Windows equals \r\n. To add newlines in a C# string, there are a couple options—and the best option may depend on your program.

Newline versions. There is a constant from the base class library and the actual string literal. We review these newline options.Environment

An example. Here we need to create a string with a line break in the middle of it, which will form a 2-line string. We will use the Environment.NewLine constant for this.Strings Console

Note: NewLine is defined by the .NET Framework and could vary by platform. But it is unlikely to ever equal a different value.

C# program that uses Environment.NewLine using System; class Program { static void Main() { // // Use string concat to combine two literals // with the newline constant. // string s = "First line" + Environment.NewLine + "Second line"; Console.Write(s); Console.Read(); } } Output First line Second line

Example 2. You don't need to use Environment.NewLine as in the first example. You can use the "\r\n" constant directly—this may be a better choice.

Note: This constant changes the IL generated. It is effective on Windows platforms and is (in practical aspects) the same.

C# program that uses newline constant using System; class Program { static void Main() { // // Use "\r\n" string in string concat. // string s = "One line" + "\r\n" + "Another line"; Console.Write(s); Console.Read(); } } Output One line Another line

Implementation. Environment.NewLine is a constant property in .NET. And it could be tied to the current executing environment or platform.

Call instruction L_000b: call string [mscorlib]System.Environment::get_NewLine() Implementation of get_NewLine .method public hidebysig specialname static string get_NewLine() cil managed { .maxstack 8 L_0000: ldstr "\r\n" L_0005: ret }

Notes, IL. The above IL is generated when you use NewLine. The "get_" part indicates that the value is fetched from a property. This is inlined so has no performance penalty.IL Property

Next: We look into get_NewLine and its implementation. You can see it simply returns the "\r\n" string literal.

Tip: You can find more information on the usage and implementation of string literals in the C# language on this website.

String Literal

Note: It is possible that a new character set could have another constant as a line break.

A summary. We used the Environment.NewLine constant in the C# language. Some developers find the Environment.NewLine constant has more clarity in their code.