Create multiline string literal in C#

This article illustrates the different techniques to create a multiline string literal in C#.

1. Using Verbatim String Literal

In C#, the @ symbol serves as a verbatim identifier. It can be used to indicate that a string literal is to be interpreted verbatim. The following example illustrates the effect of defining a verbatim string literal containing line breaks.

using System;

public class Example

{

public static void Main()

{

string xml = @"<?xml?>

<book>

<name>Harry Potter</name>

<author>J. K. Rowling</author>

<language>English</language>

<genre>Fantasy</genre>

</book>";

Console.WriteLine(xml);

}

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Output:

<?xml?>
<book>
    <name>Harry Potter</name>
    <author>J. K. Rowling</author>
    <language>English</language>
    <genre>Fantasy</genre>
</book>

Starting with C# 6.0, you can use interpolated strings ($) with the verbatim string literal (@):

using System;

public class Example

{

public static void Main()

{

string genre = "Fantasy";

string xml = $@"<?xml?>

<book>

<name>Harry Potter</name>

<author>J. K. Rowling</author>

<language>English</language>

<genre>{genre}</genre>

</book>";

Console.WriteLine(xml);

}

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Output:

<?xml?>
<book>
    <name>Harry Potter</name>
    <author>J. K. Rowling</author>
    <language>English</language>
    <genre>Fantasy</genre>
</book>

2. Using `String.Join()` method

Another alternative is to use the String.Join() method, which concatenates elements of a collection with the specified separator between each element. The following code example demonstrates how to create a multiline string literal with the String.Join() method using Environment.NewLine as a delimiter.

using System;

public class Example

{

public static void Main()

{

string xml = String.Join(

Environment.NewLine,

"<?xml?>",

"<book>",

"\t<name>Harry Potter</name>",

"\t<author>J. K. Rowling</author>",

"\t<language>English</language>",

"\t<genre>Fantasy</genre>",

"</book>");

Console.WriteLine(xml);

}

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Output:

<?xml?>
<book>
    <name>Harry Potter</name>
    <author>J. K. Rowling</author>
    <language>English</language>
    <genre>Fantasy</genre>
</book>

That’s all about creating a multiline string literal in C#.

Create multiline string literal in C#

1. Using Verbatim String Literal

2. Using String.Join() method

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2. Using `String.Join()` method