小编Shr*_*rry的帖子

我有一个文本框,用户应该只输入字母数字字符,并且应该允许非空格键按下,如退格键,箭头键等.此外,它还适用于所有主流浏览器(如Mozilla Firefox).

我尝试过几个例子,只允许我输入字母数字字符,但退格不适用于Mozilla Firefox中的以下示例.

$('input').bind('keypress', function (event) {
    var regex = new RegExp("^[a-zA-Z0-9]+$");
    var key = String.fromCharCode(!event.charCode ? event.which : event.charCode);
    if (!regex.test(key)) {
       event.preventDefault();
       return false;
    }
});

我在用 using System.Net.Mail;

并按照以下代码发送邮件

MailMessage message = new MailMessage();
        SmtpClient client = new SmtpClient();

        // Set the sender's address
        message.From = new MailAddress("fromAddress");

     // Allow multiple "To" addresses to be separated by a semi-colon
        if (toAddress.Trim().Length > 0)
        {
            foreach (string addr in toAddress.Split(';'))
            {
                message.To.Add(new MailAddress(addr));
            }
        }
      // Allow multiple "Cc" addresses to be separated by a semi-colon
        if (ccAddress.Trim().Length > 0)
        {
            foreach (string addr in ccAddress.Split(';'))
            {
                message.CC.Add(new MailAddress(addr));
            }
        }
        // Set the subject and …