problem in updating data

[ajinkya ragalwa]

Hey guys,

I have made an application that uses sql server to keep data and retrieve it when needed. Today me and my friend tried
to update data of same record from different computers, it threw exception. I have read a lot about 'Optimistic concurrency' but to be honest, I don't know how to implement it. Can anyone please help me or atleast guide me
on how should i implement it.

Thanks and regards
ajinkya

[adriancs]

What is the exception message that have thrown?