C# 11 New Feature - Raw String Literals
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In previous version of C#, it is not convenient to create string literals that have double quotes or HTML, XML in it. In C# 11, raw string literal feature is added so that C# developers can now use """
to create raw string literals like Python developers.
Prior to C# 11
Previously, we use \
to escape quotes in a string literal like the following code snippet shows:
using System; public class Program { public static void Main() { var str = "I have a double quote (\")"; Console.WriteLine(str); } }
Alternatively, we can also use @
to specify a string without escape.
using System; public class Program { public static void Main() { var str = @"I have a double quote ("")"; Console.WriteLine(str); } }
The output are all the same:
I have a double quote (")
C# 11 raw string literal
The above example can be simply implemented in C# 11:
using System; public class Program { public static void Main() { var str = """I have a double quote (")"""; Console.WriteLine(str); } }
Multiline string literal
You can also use it to implement multi-line string literal:
var str = """I have a double quote (") another line """;
String interpolation
You can also use string interpolation together with raw string literal. The number of $
that prefixes the string is the number of curly brackets that are required to indicate a nested code expression.
var var1 = 1; var jsonString = $$""" { "attr1": {{var1}}, "attr2": "{1,2,3,4,5}" } """;
In the above example, {{var1}}
interpolation string will be replaced with value 1
.
Enjoy this new feature of C# 11. It makes C# programming even more efficient now.
References
C# 11 Preview Updates - Raw string literals, UTF-8 and more! - .NET Blog