从vb.net运行Python函数

我是vb.net的新手.我试图从vb.net调用 python函数,但收到错误,’Invoke’不是’Microsoft.Scripting.Hosting.ObjectOperations’的成员

Imports Microsoft.Scripting
Imports Microsoft.Scripting.Hosting
Imports IronPython.Hosting
Sub Main
 Dim engine As ScriptEngine
        Dim scope As ScriptScope
        Dim i As Integer


        engine = Python.CreateEngine()
        scope = engine.ExecuteFile("C:\Working.py")
 Dim v = engine.Operations.Invoke(scope.Getvariable(methodName))

‘需要调用的方法的名称并获得返回值.
 任何人都可以推荐我更好的方法来使这项工作？我已经看过这个链接：http://msmvps.com/blogs/theproblemsolver/archive/2008/08/14/calling-ironpython-functions-from-net.aspx

先感谢您.

解决方法

像下面这样的东西应该工作：

Sub Main(ByVal args() As String) 
    Dim pyRT As ScriptRuntime = Python.CreateRuntime() 
    Dim workingObj As Object = pyRT.UseFile("working.py")   
    workingObj.methodName() 
  End Sub