Roslyn, passing values through hostObject

Question

I am trying to send one class through hostObject but apparently it doesn't want to work: ``` using Roslyn.Compilers; using Roslyn.Compilers.CSharp; using Roslyn.Scripting; using Roslyn.Scripting.CSharp; public class ShippingService { public class ShippingDetails//class that I want to send { public decimal total { get; set; } public int quantity { get; set; } public string destination { get; set; } } public static string ShipingCost(decimal total, int quantity, string destination) { var details = new ShippingDetails { total = total, quantity = quantity, destination = destination }; try { ScriptEngine roslynEngine = new ScriptEngine(); Roslyn.Scripting.Session session = roslynEngine.CreateSession(details); session.AddReference(details.GetType().Assembly); session.AddReference("System.Web"); session.ImportNamespace("System"); session.ImportNamespace("System.Web"); var result = session.Execute("details.destination"); return result; } catch (Exception e) { return e.Message; } return ""; }…

Accepted Answer

The error message is exactly right. When you have a host object, you can't access it by the name of the local variable that holds it in your method (how would that even work? how would `ScriptEngine` learn that name?).

Instead, you can access the host object directly, almost as if you were writing a member method of that type (but not quite, you can't use `this` or access non-public members).

This means that you should write just:

```
session.Execute("destination")
```

BTW, according to .Net naming guidelines, names of public properties should start with upper case letter (e.g. `Destination`).

Roslyn, passing values through hostObject

Solution

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