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?