Question

I use asp.net 4 c# and EF 4.

I’m profiling my application. I have this code which result expensive.

I woud like to know if you know a better way to write it. I need to speed it up.

            string htmlhead = context.CmsOptions.SingleOrDefault(op => op.OptionId == 7).Value;
            if (htmlhead != null)
                uxHtmlHead.Text = htmlhead;
            else
                uxHtmlHead.Text = "No Html Head.";

Thanks

Useful article
http://weblogs.asp.net/zeeshanhirani/archive/2010/09/20/which-one-is-faster-singleordefault-or-firstordefault.aspx

Answer 1

Use FirstOrDefault() … This will exit as soon as it finds a result.

On the other hand SingleOrDefault() searches the entire collection for a single result and throws exception if it finds more than one result for the query