Question

I’m pretty new at EF and Linq.

Please help me to convert this Method Syntax query to a Linq one.

Method Syntax to retrieve a single scalar variable from my DataBase using EF.

string myCategoryTitle = context.CmsCategories.SingleOrDefault(x => x.CategoryId == rowView.CategoryId).Title;

Title rappresent a propriety/field in my model.

Any idea how to do it using a Linq Syntax?

Thanks for your help!

Answer 1

I assume you mean using a query expression… in which case, you can’t. There’s no query expression syntax for SingleOrDefault.

You could use this though:

string myCategoryTitle = (from x in context.CmsCategories
                          where x.CategoryId == rowView.CategoryId
                          select x.Title).SingleOrDefault();

Note that this isn’t quite the same as the current code, which will throw a NullReferenceException if SingleOrDefault(...) returns null…