vscode/extensions/csharp/language-configuration.json

{
	"comments": {
		"lineComment": "//",
		"blockComment": ["/*", "*/"]
	},
	"brackets": [
		["{", "}"],
		["[", "]"],
		["(", ")"]
	],
	"autoClosingPairs": [
		["{", "}"],
		["[", "]"],
		["(", ")"],
		{ "open": "'", "close": "'", "notIn": ["string", "comment"] },
		{ "open": "\"", "close": "\"", "notIn": ["string", "comment"] }
	],
	"surroundingPairs": [
		["{", "}"],
		["[", "]"],
		["(", ")"],
		["<", ">"],
		["'", "'"],
		["\"", "\""]
	],
	"folding": {
		"markers": {
			"start": "^\\s*#region\\b",
			"end": "^\\s*#endregion\\b"
		}
	}
}