using System;

var multilineString1 = """
    1. First line
        2. Third line
    3. Fourth "line"
    """;

var now = DateTime.Now;
var dayOfWeek = now.DayOfWeek.ToString();
//in version 11:
var multilineString2 = $"""
    {
        "Date" : "{{now.ToString("yyyy-MM-dd")}}",
        "DayOfWeek" : "{{dayOfWeek}}"
    }
    """;

Console.WriteLine(multilineString1);
//prints:
//1. First line
//    2.Third line
//3.Fourth "line"

Console.WriteLine(multilineString2);
//prints:
//{
//    "Date" : "2024-09-11",
//    "DayOfWeek" : "Wednesday"
//}