C#开发中如何处理用户输入的验证问题

using System;
using System.Text.RegularExpressions;

class Program
{
    static void Main()
    {
        string email = GetEmail();

        bool isValidEmail = IsValidEmail(email);

        if (isValidEmail)
        {
            Console.WriteLine("邮箱输入正确");
        }
        else
        {
            Console.WriteLine("邮箱输入有误");
        }

        Console.ReadKey();
    }

    static string GetEmail()
    {
        Console.WriteLine("请输入您的邮箱：");
        return Console.ReadLine();
    }

    static bool IsValidEmail(string email)
    {
        string pattern = @"^[w.-]+@[w.-]+.w+$";
        return Regex.IsMatch(email, pattern);
    }
}

using System;
using System.ComponentModel.DataAnnotations;

class Program
{
    static void Main()
    {
        var person = new Person();

        Console.WriteLine("请输入您的年龄：");
        string input = Console.ReadLine();
        person.Age = Convert.ToInt32(input);

        if (Validate(person))
        {
            Console.WriteLine("年龄输入正确");
        }
        else
        {
            Console.WriteLine("年龄输入有误");
        }

        Console.ReadKey();
    }

    static bool Validate(object obj)
    {
        var context = new ValidationContext(obj, serviceProvider: null, items: null);
        var results = new System.Collections.Generic.List<ValidationResult>();
        return Validator.TryValidateObject(obj, context, results, true);
    }
}

class Person
{
    [Range(0, 150)]
    public int Age { get; set; }
}