驗證郵箱地址和手機號碼 .

 

namespace test
{
    class Test5
    {
        static void Main(string[] args)
        {
            Console.Write("請輸入要驗證的手機號碼:");
            string telephone = Console.ReadLine();
            bool result1 = CheckPhone(telephone);
            if (result1 == true)
            {
                Console.WriteLine("手機號碼{0}合法!", telephone);
            }
            else
            {
                Console.WriteLine("手機號碼{0}不合法!", telephone);
            }

            Console.Write("請輸入要驗證的郵箱地址:");
            string email = Console.ReadLine();
            bool result2 = CheckEmail(email);
            if (result2 == true)
            {
                Console.WriteLine("郵箱地址{0}合法!", email);
            }
            else
            {
                Console.WriteLine("郵箱地址{0}不合法!", email);
            }
        }

        /// <summary>
        /// 驗證手機號碼的有效性
        /// </summary>
        /// <param name="phone">待驗證的手機號碼</param>
        /// <returns>true合法，false不合法</returns>
        static bool CheckPhone(string phone)
        {
            if (phone.Length != 11)
            {
                return false;
            }
            else
            {
                //驗證是否由數字構成
                char[] chs = phone.ToCharArray();
                for (int index = 0; index < chs.Length; index++)
                {
                    if (chs[index] < '0' || chs[index] > '9')
                    {
                        return false;
                    }
                }
                return true;
            }
        }

        /// <summary>
        /// 驗證郵箱地址的有效性（必須包含@和.並且以.com或.cn結尾）
        /// </summary>
        /// <param name="email">待驗證的郵箱地址</param>
        /// <returns>true合法,false不合法</returns>
        static bool CheckEmail(string email)
        {
            //判斷是否包含@和.符號
            if (email.IndexOf("@") == -1 || email.IndexOf(".") == -1)
            {
                return false;
            }
            else
            {
                //判斷是否以.com或.cn結尾
                if (email.EndsWith(".com") == true || email.EndsWith(".cn") == true)
                {
                    return true;
                }
                else
                {
                    return false;
                }
            }
        }
    }
}