Question

I’m having problems with getting data using LINQ-to-SQL. I use the following piece of code to look up a user for our web app (user name is email address):

var referenceUser = 
    db.ReferenceUsers
      .SingleOrDefault(rf => rf.Email == values["emailAddress"]);

If I type [e-mail] I get a ReferenceUser however if I type [e-mail] I don’t. How can I get LINQ to ignore the case when selecting a user?

Answer 1

Does:

var referenceUser = 
    db.ReferenceUsers.SingleOrDefault(
        rf => rf.Email.ToUpper() == values["emailAddress"].ToUpper());

work?

The ToUpper() should be translated into the correct SQL to run as a database query, and then return both results.