How do I determine whether an entity framework object is an entity or a complex type?

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C#

entity-framework

As the question asks, is there a way to tell whether a given object is a complex type or an entity?

This is my current code where ent is the object context:

var objectResult = (from meta in ent.MetadataWorkspace.GetItems(DataSpace.CSpace)
                                        .Select(m => m)
                                   from p in (meta as EntityType).Properties
                                       .Where(p => p.DeclaringType.Name == entity.GetType().Name)
                                   select p);

int count = objectResult.Count();

...the call to objectResult.Count() results in an Object reference not set to an instance of an object exception if the object is not an Entity type. I can trap this if necessary but am hoping there's another way around it?