验证邮箱地址和手机号码

 

namespace test
{
    class Test5
    {
        static void Main(string[] args)
        {
            Console.Write("请输入要验证的手机号码:");
            string telephone = Console.ReadLine();
            bool result1 = CheckPhone(telephone);
            if (result1 == true)
            {
                Console.WriteLine("手机号码{0}合法!", telephone);
            }
            else
            {
                Console.WriteLine("手机号码{0}不合法!", telephone);
            }

            Console.Write("请输入要验证的邮箱地址:");
            string email = Console.ReadLine();
            bool result2 = CheckEmail(email);
            if (result2 == true)
            {
                Console.WriteLine("邮箱地址{0}合法!", email);
            }
            else
            {
                Console.WriteLine("邮箱地址{0}不合法!", email);
            }
        }

        /// <summary>
        /// 验证手机号码的有效性
        /// </summary>
        /// <param name="phone">待验证的手机号码</param>
        /// <returns>true合法，false不合法</returns>
        static bool CheckPhone(string phone)
        {
            if (phone.Length != 11)
            {
                return false;
            }
            else
            {
                //验证是否由数字构成
                char[] chs = phone.ToCharArray();
                for (int index = 0; index < chs.Length; index++)
                {
                    if (chs[index] < '0' || chs[index] > '9')
                    {
                        return false;
                    }
                }
                return true;
            }
        }

        /// <summary>
        /// 验证邮箱地址的有效性（必须包含@和.并且以.com或.cn结尾）
        /// </summary>
        /// <param name="email">待验证的邮箱地址</param>
        /// <returns>true合法,false不合法</returns>
        static bool CheckEmail(string email)
        {
            //判断是否包含@和.符号
            if (email.IndexOf("@") == -1 || email.IndexOf(".") == -1)
            {
                return false;
            }
            else
            {
                //判断是否以.com或.cn结尾
                if (email.EndsWith(".com") == true || email.EndsWith(".cn") == true)
                {
                    return true;
                }
                else
                {
                    return false;
                }
            }
        }
    }
}