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how to restrict user login twice in an web application

[edit]Spurious code block removed - OriginalGriff[/edit]
Updated 31-May-23 12:29pm
bbirajdar 1-Nov-12 5:07am    
What does it mean by twice login ?
OriginalGriff 1-Nov-12 5:14am    
This is not a good question - we cannot work out from that little what you are trying to do.
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you can do one thing....
use session variable..
at login time store the login status in variable and check it on every page load...
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from login twice with his account. The MembershipUser class has a property "IsOnline " which returns wheter a user is logged in or not by checking the login time span. It's not easy to do reliably because HTTP is a disconnected, stateless protocol, Therefore, a user is considered online if the current date and time minus the UserIsOnlineTimeWindow property value is earlier than the LastActivityDate for the user
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