#!csharp
var x = "C# subkernel value";
x

#!fsharp
#!share --from csharp x
sprintf "%s, accessed from F# subkernel" x

#!fsharp
open System.Collections.Generic

let list = List<string>()
list.Add "Added by F#"
list    

#!csharp
#!share --from fsharp list

list.Add("Added by C#");

list

#!fsharp

list

#!value --name someJson
    
{ 
    "what": "some JSON", 
    "why": "to share it with another subkernel"
}

#!share someJson --from value
    
using Newtonsoft.Json.Linq;
var jObject = JObject.Parse(someJson);
jObject.ToString()

#!value --from-file data.json --name someJson

#!share someJson --from value
someJson

#!value --from-url https://dot.net --name dn

#!share --from value dn
display(dn, "text/html");

#!value --name someJson --mime-type application/json
    
{ 
    "what": "some JSON", 
    "why": 
        [
            "to share it with another subkernel",
            "to see it in a treeview"
        ]
}

#!csharp 
public class DefinedInCSharp { }

var csharpInstance = new DefinedInCSharp();

#!fsharp
#!share --from csharp csharpInstance
csharpInstance