How to create sequential unique id's in asp.net?

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hi to all. In my app i've a small data entry form where the employee enters his details.Now i need to save these details into a table which has an EmpID column as primary key.Now i want to auto generate this EmpID value dynamically.For this scenario i wrote a stored procedure in which i'll retrieve the maximum value of EmpID and i'll increment that value and i'll insert that increment value as EmpID value.Other than this approach is any other way for this scenario because in my app now i need to display only those entered Employee values in another values.So for this scenario i need to store the EmpID value in session and i'll retrieve the Employee details through EmpID value from the session.So,please guide me for this scenario.

Thanks in Advance.

Posted 29-Jan-13 3:52am

Jagan911

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PIEBALDconsult 29-Jan-13 10:10am

You don't do it in ASP.net; you do it in the backend code. You need to think in layers.

"retrieve the maximum value of EmpID and i'll increment"

Bad idea.

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Matej Hlatky · Answer 1 · 2013-01-29T04:05:00

Solution 1

You can use IDENTITY (Property)[^] in PK column, which is intended for generating sequential values.
Also you can use NEWID()[^] or NEWSEQUENTIALID()[^] functions for getting the Default value of PK column.

Posted 29-Jan-13 4:05am

Matej Hlatky