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HomeHomeArchived Discus...Archived Discus...Developing Under Previous Versions of .NETDeveloping Under Previous Versions of .NETASP.Net 2.0ASP.Net 2.0Preventing multiple users use the same accountPreventing multiple users use the same account
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11/20/2007 4:53 PM
 
zcsstar

Joined: 6/27/2007
Posts: 15

Hi there.

I'm doing a web application under DotNetNuke (ASP.net + C# + SQL server 2005) at the moment and have a question on Login Controls.

My question is how can I prevent multiple users login using the same account at the same time?

I'm a new guy in this area, so any suggestions will be greate!

Thanks in advanced.
 
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11/21/2007 11:19 AM
 
Mitchel Sellers


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www.mitchelsellers.com
Joined: 1/24/2007
Posts: 7846

There isn't really an "Easy" solution for this item.

Basically you will need to create a custom authentication provider to handle the login and you will also need to create a method to actually track the users activity to ensure that they are in fact still working in the site.  Then setup routines to ensure that an account doesn't stay locked just because they didn't click logout.

-Mitchel Sellers
Microsoft MVP, ASPInsider, DNN MVP
CEO/Director of Development - IowaComputerGurus Inc.
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Visit mitchelsellers.com for my mostly DNN Blog and support forum.

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11/21/2007 5:12 PM
 
Matthew Christenson

Joined: 10/19/2006
Posts: 164

An 'easier' solution may be possible:

IF your requirement is to only allow a user logged in at one place at a time, instead of refusing to log in a duplicate user, you could log off the first user.

This could be done as an authentication HTTP Module.  After checking the users cookie to see if he is supposed to be logged in, you can then query the log to see if the last login he made was using the current session.  If it is not - then he had logged in someplace else, and he should be logged off this old session and delivered a message t log back in!" calls every day.

-Matt
 
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