Best way for retrieving single record results in LINQ to SQL

Question

If I query a table with a condition on the key field as in:

        var user = from u in dc.Users                    where u.UserName == usn                    select u; 

I know that I will either get zero results or one result. Should I still go ahead and retrieve the results using a for-each or is there another preferred way to handle this kind of situation.

Answer 1

Try something like this:

var user = (from u in dc.Users                    where u.UserName == usn                    select u).FirstOrDefault(); 

The FirstOrDefault method returns the first element of a sequence that satisfies a specified condition or a default value if no such element is found.