Pass object instance to Roslyn ScriptEngine

Question

I\'m looking for a C# scripting engine, that can interpret blocks of C# code, while maintaing a context. For example, if enter to it: var a = 1; , and then

Answer 1

The answer was found in a link commented by @Herman.

As it turn out, Roslyn ScriptEngine/Session supports a concept of Host Object. In order to use it, define a class of your choise, and pass it upon session creation. Doing so, makes all public member of that host object, available to context inside the session:

public class MyHostObject
{
    public List list_of_ints;
    public int an_int = 23;
}

var hostObject = new MyHostObject();
hostObject.list_of_ints = new List();
hostObject.list_of_ints.Add(2);
var engine = new ScriptEngine(new[] { hostObject.GetType().Assembly.Location });

// passing reference to hostObject upon session creation
var session = Session.Create(hostObject);

// prints `24` to console
engine.Execute(@"System.Console.WriteLine(an_int + list_of_ints.Count);", 
               session);