C#检测输入的邮件地址是否合法

/**/ /// <summary>        /// 检测输入的邮件地址strEmail是否合法，非法则返回true。        /// </summary>          public   bool  CheckEmail( string  strEmail)         {            int i,j;            string strTmp,strResult;            string strWords = "abcdefghijklmnopqrstuvwxyz_-.0123456789"; //定义合法字符范围            bool blResult =false;            strTmp = strEmail.Trim();            //检测输入字符串是否为空，不为空时才执行代码。            if(!(strTmp == null || strTmp.Length == 0))            {                //判断邮件地址中是否存在“@”号                if((strTmp.IndexOf("@")<0))                {                    blResult = true;                    return blResult;                }                //以“@”号为分割符，把地址切分成两部分，分别进行验证。                string[] strChars = strTmp.Split(new char[] {'@'});                foreach(string strChar in strChars)                {                    i = strChar.Length;                    //“@”号前部分或后部分为空时。                    if(i == 0)                    {                        blResult = true;                        return blResult;                    }                    //逐个字进行验证，如果超出所定义的字符范围strWords，则表示地址非法。                    for(j=0;j<i;j++)                    {                        strResult = strChar.Substring(j,1).ToLower();                        if(strWords.IndexOf(strResult)<0)                        {                            blResult = true;                            return blResult;                        }                    }                }            }            return blResult;        }

转载于:https://www.cnblogs.com/lgzdd/archive/2005/07/31/204015.html

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