拒绝字符串变量中的字符串

Question

我需要拒绝在我的控制台应用程序中编写字符串的能力,此时,当输入文本而不是数字时,控制台崩溃.

我现在有类似的东西

class Program
{
    static void Main(string[] args)
    {
        string[] names = new string[2];
        string age;
        bool agetest = false;

        Console.WriteLine("Hello, I am the NameBot2000, What is your first name?");
        names[0] = Console.ReadLine();
        Console.WriteLine("Well done. What is your surname?");
        names[1] = Console.ReadLine();
        Console.WriteLine("What year were you born in?");
        age = Console.ReadLine();

        int.Parse(age);

        if (Enumerable.Range(0,2015).Contains(age));




        int year = 0;


        string wow = "";

        if (Enumerable.Range(0,31).Contains(year))
            wow = "young";

        else if (Enumerable.Range(31,51).Contains(year)) 
            wow = "old";

        else if (Enumerable.Range(51,500).Contains(year))
            wow = "ancient";

        Console.WriteLine("Well done. You said your name was {0} {1}, and you are {2} years old!", names[0], names[1], year);
        Console.WriteLine("You are so {0}!", wow);
        Console.ReadLine();


    }
}

我试图合并一个布尔值,但我不确定如何比较变量以检查它的格式.

谢谢你提前!

Answer 1

而不是Parse,使用TryParse.

int age = 0;
if (Int32.TryParse(Console.Readline, out age)
    // Correct format.
else
    // error!

什么TryParse()都行,就是把用户输入,尝试以解析它为int,如果成功,将输出一个int(和bool = true),否则会输出bool = false.