Stored Procedures and asp.net programmability; variable or SQL

Trying to display a users Lastname, Firstname --- Website And I need to insert a comma and space after Lastname to a GridView. I am trying to add a CASE statement in SQL and having trouble figuring it out.

Perhaps I need to use @parameter (scalar variable?) to abstract the memory read from CASE statement; or my syntax is wrong and I just don't understand.

SELECT 
CASE
          WHEN IsNull(people_Table.firstName, '') = ''
          THEN CONCAT(people_Table.lastName, ', ',
          people_Table.firstName) 
          ELSE people_Table.lastName
          END as fullName, people_Table.website
FROM people_Table INNER JOIN membership_Table on people_Table.ID =
membership_Table.personID
WHERE rectype = 'Master'
AND membershipType = 'Business'
AND expirationDate > GetDate()
ORDER BY people_Table.lastName

Otherwise I suppose I should use an asp databoundevent in the template. What is better for performance and security?

via Chebli Mohamed