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; } } } } }