.Net中的内置字符套管功能

string template = "Hello, {0}! Today is {1}.";
string name = "John";
DateTime today = DateTime.Now;
string message = string.Format(template, name, today.ToShortDateString());
Console.WriteLine(message); // 输出 "Hello, John! Today is 2022-01-01."

string name = "John";
DateTime today = DateTime.Now;
string message = $"Hello, {name}! Today is {today.ToShortDateString()}.";
Console.WriteLine(message); // 输出 "Hello, John! Today is 2022-01-01."