How can I use escape characters with string interpolation in C# 6?

Question

I've been using string interpolation and love it. However, I have an issue where I am trying to include a backslash in my output, but I am not able to get it to work.

I want something like this...

var domain = "mydomain"; var userName = "myUserName"; var combo = $"{domain}\{userName}" 

I want the output of combo to be:

myDomain\myUserName 

I get a syntax error about the \ being an escape character. If I put in \\ then the syntax error is gone, but the output is myDomain\\myUsername.

How can I include escaped characters in an interpolated string?

Answer 1

Escaping with a backslash(\) works for all characters except a curly brace.

If you are trying to escape a curly brace ({ or }), you must use {{ or }} per $ - string interpolation (C# reference)

... All occurrences of double curly braces (“{{“ and “}}”) are converted to a single curly brace.

Answer 2

You can do this, using both the $@. The order is important.

var combo = $@"{domain}\{userName}"; 

The original question mentions specifically C# 6. As commented, C# 8 no longer cares for the order.