C#字符内插

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var name = "Mark";
var date = DateTime.Now;


Console.WriteLine("Hello, {0}! Today is {1}, it's {2:HH:mm} now.", name, date.DayOfWeek, date);
Console.WriteLine($"Hello, {name}! Today is {date.DayOfWeek}, it's {date:HH:mm} now.");

​

输出：
Hello, Mark! Today is Tuesday, it's 11:31 now.
Hello, Mark! Today is Tuesday, it's 11:31 now.