Connecting a DLL in C#: Run through IList

Question

Programming

Hello.
Trying to implement modularity in the program, I ran into a small problem.
The function that I call is in the dll and returns the IList<User> type, and the program that connects the dll using Assembly does not know anything about the type, it only knows that this is a list and it has 3 elements.
How to run through them?



In other words, how to get the ID and login of each element of the list, what are the options to do this?
Thanks in advance.

Answer 1

With Reflection

foreach (object value in returned)
{
  var id = value.GetType().GetProperty("Id").GetValue(value, null);
  var login = value.GetType().GetProperty("Login").GetValue(value, null);
}

Answer 2

foreach (dynamic item in (dynamic)returned) {
    string login = item.Login;
}

Answer 3

It can be made easier and more secure.

class User {
  public GUID Id {get;set;}
  public string Login {get;set;}
}

interface ITestInterface
{
  IList<User> GetList();
}

And get it like this:

 Activator.CreateInstance(type) as ITestInterface;

Get a strongly typed object as output. And no reflection is needed.

Answer 4

Maybe so?

foreach(var el in returned)
{
}