C # QQ Mailbox registration, and a few seconds

One

This is what the front desk needs.

<asp:textbox id= "Textemail" runat= "Server" cssclass= "noneinput" placeholder= "Please enter your email account" onblur= "email ()" ></ Asp:textbox>
<asp:button id= "Button2" runat= "server" text= "Get Verification Code" cssclass= "Zcnext am-fr am-btn-default" onclick= "button2_click "/>

<asp:hiddenfield id= "Hftimer" runat= "Server"/>//this is the storage time
<asp:hiddenfield id= "Time" runat= "Server"/>//this is used to determine the verification code expires

This is the JS code section

<script>
var interval = 1000;
function Showcountdown () {
var date = $ ("#<%=hftimer.clientid%>"). Val ();//This is the value of the hidden control that gets the previous hold time
var now = new Date ();


var endDate = new Date (date);
if (now < endDate) {
var lefttime = Enddate.gettime ()-now.gettime ();
var leftsecond = parseint (lefttime/1000);
Ar day1=parseint (leftsecond/(24*60*60*6));
var day1 = Math.floor (Leftsecond/(60 * 60 * 24));
var hour = Math.floor ((leftsecond-day1 * 24 * 60 * 60)/3600);
var minute = Math.floor ((leftsecond-day1 * * * 60-hour * 3600)/60);
var second = Math.floor (leftsecond-day1 * * * 60-hour * 3600-minute * 60);
document.getElementById ("Timerh"). InnerHTML = Day1 * + hour;
document.getElementById ("Timerm"). InnerHTML = minute;
document.getElementById ("Miao"). InnerHTML = second;
} else {
document.getElementById ("Miao"). InnerHTML = "";//when time expires into empty
var ts = $ ("#<%=time". ClientID%> "). Val (" Failure ");//This is the value of the hidden control that is used to determine the expiration of the Verification code

}



}
Window.setinterval (function () {Showcountdown ();}, Interval);
</script>

Here's the backstage code.

protected void button2_click (object sender, EventArgs e)
{
MailMessage msg = new MailMessage (); Instantiation of an email class

string email = Textemail.Text.Trim ();
if (email!= "")
{
Msg. To.add (email);
Msg. Cc.  ADD ("[email protected]"); CC Person Address
Msg. from = new MailAddress ("[Email protected]", "Cui Qiang"); Sender Address
Msg. Subject = "Verification Code"; Message header
Msg. subjectencoding = Encoding.UTF8; Character format


Msg. Body =suiji (); Message content here is a method to return a four-digit verification code
Session["yan"] = Msg.  Body; Save the contents of the message to the session
Msg. bodyencoding = Encoding.UTF8; Set the encoding format for message content

SmtpClient client = new SmtpClient (); SMTP protocol for transporting simple messages
Client. Host = "smtp.qq.com"; The IP address of QQ
Client. Port = 587; Port of the transaction
Client. Enablessl = true; Encrypted links
Client.  Credentials = new NetworkCredential ("[Email protected]", "RRCNTQLLBHAHJGCD"); Used to verify the identity credentials of the sender
Client. Send (msg); Sends a message to an SMTP server, passing

DateTime timed = System.DateTime.Now;
DateTime times = timed. AddMinutes (1);//Add a minute to the current time
Hftimer.value = times. ToString ("Yyyy/mm/dd HH:mm:ss");//Assigning a value to the foreground's hidden control
Time. Value = "";//assign NULL to the control used to verify the expiration of the Verification code
}

}

C # QQ Mailbox registration, and a few seconds