How to create IronPython objects of types defined in C#

seshadripv — Thu, 24 Jul 2008 05:45:00 GMT

The DLR Hosting API lets the hosted script instantiate objects of types defined in the hosting C# / VB module. This post describes how to do that using the appropriate methods from the API. Here are the simple steps -

1) Load the assembly containing the type in to the ScriptRuntime object

ScriptRuntime runtime = ScriptRuntime.Create();

runtime.LoadAssembly( Assembly.GetAssembly( typeof( n1.MyType1)));

2) Import the namespace/type inside the script

from n1 import *

3) Create an object of the type and invoke members

n=MyType1()

print n.Name

Here’s the full sample

using System.Scripting;

using Microsoft.Scripting.Hosting;

using System.Reflection;

namespace n1 {

public class MyType1 {

public string Name { get; set; }

public MyType1() {

Name = "MyType1";

}

public class Program {

static void Main(string[] args) {

string code = @"from n1 import *

n=MyType1()

print n.Name";

ScriptRuntime runtime = ScriptRuntime.Create();

runtime.LoadAssembly( Assembly.GetAssembly( typeof( n1.MyType1)));

ScriptEngine eng = runtime.GetEngine("py");

ScriptScope scope = eng.GetEngine("py").CreateScope();

ScriptSource src = eng.CreateScriptSourceFromString( code, SourceCodeKind.Statements);

src.Execute(scope);

}

DLR Hosting and related stuff... : LoadAssembly

How to create IronPython objects of types defined in C#