Activating Regular Expression Syntax Coloring

If we use Visual Studio 2022 as our code editor, then we probably noticed that when passing a string value to the Regex constructor, we see color syntax highlighting, as shown in the figure:

Syntax coloring for regular expression

Why does this string get syntax coloring for regular expressions when most string values do not? Let’s find out:

Step 1: Right-click in the new constructor, select “Go To Implementation,” and note the string parameter named pattern is decorated with an attribute named StringSyntax that has the string constant ...