用于将对象显式转换为字符串的C#选项

object obj = new object();
string str = obj.ToString();

string name = "Alice";
int age = 25;
string str1 = string.Format("姓名：{0}，年龄：{1}", name, age);
string str2 = $"姓名：{name}，年龄：{age}";

class Person
{
    public string Name { get; set; }
    public int Age { get; set; }

    public override string ToString()
    {
        return $"姓名：{Name}，年龄：{Age}";
    }
}

Person person = new Person { Name = "Bob", Age = 30 };
string str = person.ToString();