i want securty coding in a login page

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I finished login page but I copied that address and paste another tab, it was coming the same page, for example,
localhost:1288/xxx/purch.aspx
(If I'm copy to the same link and paste another tab,it was comin[g] home screen. Can u you anyone help me?

Posted 3-Apr-12 2:54am

shiva30

Updated 3-Apr-12 3:02am

Shahin Khorshidnia

v4

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Shahin Khorshidnia 3-Apr-12 9:01am

Hello, please do not use street language like wana (want to), comin (cominq) and also "electronic messaging" like u (you)

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bhagirathimfs · Answer 1 · 2012-04-03T03:12:00

Use Session to solve the problem.
Example:
In your case for every user name has a unique ID. Put that ID in a Session like

C#

Session["UserId"] = userid.ToString();

When successfully logged in.
Check in the login page:

C#

if(Session["UserId"] != null)
{
   redirect to another page.
}

When u you logout use the below line to abandon(terminate) the Session.

C#

HttpContext.Current.Session.Clear();
HttpContext.Current.Session.Abandon();