How to get property name using Expression

Nice, I do like the expression trees. :) Unfortunately, I can't remember the reference I used to make this one, but I find the property name in a slightly different way:

public static string PropertyName<T>(Expression<Func<T, object>> expression)
{
    var body = expression.Body as MemberExpression;

    if (body == null)
    {
        body = ((UnaryExpression)expression.Body).Operand as MemberExpression;
    }

    return body.Member.Name;
}

Then, I can just use the following to get the property name:

PropertyName<Country>(x=> x.CountryName)

The benefit here is that you don't have to instantiate a new object to get the property name.