How do I define a property to read an attribute from, without instantionating an object?

Question

Suppose I have:

class Person
{
[ColumnAttribute(\"ID\"]
    public int Id;
[ColumnAttribute(\"Name\"]
public string Name;
[ColumnAttribute(\"DateOfBirth\"]
    p         


        

Answer 1

In addition to Pete M's answer you could pass the Func used in IEnumerable.OrderBy into your method, and order within your method

public IEnumerable GetAllByAge(int age, Func orderBy)
{
   var people = ... (get your collection of 'age' aged people here)
   return people.OrderBy(orderBy);
}

Usage would then be Dal.Person.GetAllByAge(25,p => p.BirthDate)