Allow only one concurrent login per user in ASP.NET

Question

Is it possible to allow only one concurrent login per user in ASP.NET web application?

I am working on a web application in which I want to make sure that the websi

Answer 1

Solution can be this way:

Add new column in your login table GuidCode.
Step 1 : When logging in check if the GuidCode in database is null.
Step 2 : Update GuidCode by new guid and also store it in the session.
Step 3 : If it is not null then take guid from the session and compare with database GuidCode value.
Step 4 : If it is same then allow login: