Question

I have a Linq query that returns an object of the type IQueryable<ClassX>. I want to put this object into object of class type ClassX and getting an error:

Cannot implicitly convert type 'System.Linq.IQueryable<ClassX>' to
'ClassX'. An explicit conversion exists (are you missing a cast?)

This is what I’m trying to do:
GetResult() returns the IQueryable<ClassX> object.

ClassX x = GetResult();

I’ve tried casting such as ClassX x = (ClassX)(GetResult()); – but it didn’t work.

Answer 1

As you’re probably aware, your LINQ query returns IQueryable<ClassX>. That represents a query with a result set. It doesn’t represent the object in the result itself, so you can’t just cast it like that.

If your method will return exactly one ClassX object, you can use .Single() to grab that object from the result set:

ClassX x = GetResult().Single();

Or .SingleOrDefault() if the result set may be empty:

ClassX x = GetResult().SingleOrDefault();