My apologies; I wasn't reading the code correctly. That's probably a sign that I should be going to bed. :) Have you tried simplifying your version just a little bit by running it directly rather than through ASP.NET<http://asp.net/> ?
On Thu, Feb 21, 2008 at 8:43 PM, Howland-Rose, Kyle < [EMAIL PROTECTED]> wrote: > Hi Curt, > > Thanks for replying. When I view the link I see the following: > > The .NET code creates the "Test" class and then runs the python code > which imports the "Test" class a subclasses it to create python class > "X". > > Class "X" is then called and cast to type "Test" and assigned to the > value obj. > > Is this what you are looking at? > > My code is pretty much identical. The VB looks like: > > > Public MustInherit Class ChildControl > Public Function Control() As WebControl > Return Nothing > End Function > Public Function GetValue() As String > Return Nothing > End Function > Public Function SetValue(ByVal value As Object) As String > Return Nothing > End Function > End Class > > Class IPReflection > Private Shared Instance As IPReflection = Nothing > Private PyEngine As PythonEngine > Private PyModule As EngineModule > > Public Shared Function Inst() As IPReflection > If Instance Is Nothing Then > Instance = New IPReflection > End If > Return Instance > End Function > > Private Sub New() > Dim path As String = HttpContext.Current.Request.MapPath(".") > PyEngine = New PythonEngine > PyEngine.AddToPath(path) > PyModule = PyEngine.CreateModule > PyEngine.DefaultModule = PyModule > > PyEngine.ExecuteFile(HttpContext.Current.Request.MapPath("CustomControls > .py")) > End Sub > > Public Function GetChildControl() As ChildControl > Return > CType(Operations.Ops.Call(PyModule.Globals("GetControl")), ChildControl) > End Function > End Class > > And the python looks like: > > import clr > import sys > > clr.AddReference('System') > import System > > sys.path.append(sys.path[0] + "/bin") > > clr.AddReferenceToFile("WebControlLibrary.dll") > clr.AddReference('System.Web') > > from System.Web.UI.WebControls import Label > > from WebControlLibrary import ChildControl > > class LabelChildControl(ChildControl): > def __init__(self): > self.control = Label() > def Control(self): > return self.control > > def GetControl(): > return LabelChildControl() > > > Thanks again, > Kyle > > ________________________________ > > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Curt > Hagenlocher > Sent: Friday, 22 February 2008 3:08 PM > To: Discussion of IronPython > Subject: Re: [IronPython] returning inherited classes to .NET > > > The page in question doesn't seem to show what you describe -- deriving > a Python class from a C# class. Maybe you could show us your sample > code? > > > On Thu, Feb 21, 2008 at 7:39 PM, Howland-Rose, Kyle > <[EMAIL PROTECTED]> wrote: > > > Hi all, > I am following > > > http://www.ironpython.info/index.php/Using_Python_Classes_from_.NET > <http://www.ironpython.info/index.php/Using_Python_Classes_from_.NET> > but using VB. > > In VB I declare a class and derive a python 1.1 class from it > but when I return it I get the exception: > > "Unable to cast object of type > 'IronPython.NewTypes.WebControlLibrary.ChildControl_1' to type > 'WebControlLibrary.ChildControl'." > > The page referenced above just seems to cast the python class > instance to the C# class instance but this does not work for me in VB. > > Any help would be appreciated :) > > Thanks, > > Kyle > > > > > ************************************************************************ > > Allens Arthur Robinson online: http://www.aar.com.au > <http://www.aar.com.au/> > > This email is confidential and may be subject to legal or other > professional privilege. 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