LINQ - Add property to results

Question

Is there a way to add a property to the objects of a Linq query result other than the following?

var query = from x in db.Courses
                select new
         


        

Answer 1

If you are looking to dynamically add a property to an object this could be a solution.

This is what has worked for me, I also had a concern and it was what happened with those domain objects that had many properties, the maintainability for any changes in the object was absurd, I managed to build an implementation with LINQ - ExpandObject - Reflection, which helped to keep my object dynamic and only add the additional properties that my view logic required.

var expandedModel = db.Courses.Select(x =>
                    {
                        dynamic expandObject = new ExpandoObject();
                        expandObject.NewProperty= $"PropertyValue";
                        foreach (var property in x.GetType().GetProperties())
                        {
                            ((IDictionary)expandObject).Add(property.Name, property.GetValue(x));
                        }
                        return expandObject;
                    }).ToList();