Hello Jimmy, Thanks a lot for this. I'll have a play with it tonight. :-)
Michael http://www.ironpython.info Jimmy Schementi wrote: > Michael, > > Thanks for bringing this to our attention! > > When hosting IronPython in a normal C# app, the Hosting API makes some > assumptions for that scenario and makes the hosting work "out of the box". > Those assumptions are not all true in Silverlight, so a custom Platform > Adaptation Layer (PAL) must be used. > > I've attached a working version of your project to this email, and here's > what it does different: > > Before you create the Python Engine: > > ScriptEnvironmentSetup setup = new ScriptEnvironmentSetup(true); > setup.PALType = typeof(SilverlightPAL); > ScriptEnvironment.Create(setup); > > This will override the default PAL the Silverlight PAL, which is defined here: > > // Definition of Silverlight Platform Adoption Layer: > public class SilverlightPAL : PlatformAdaptationLayer > { > public override Assembly LoadAssembly(string name) > { > return Assembly.Load(LookupFullName(name)); > } > > private Dictionary<string, string> _assemblyFullNames = new > Dictionary<string, string>(); > > public SilverlightPAL() > { > LoadSilverlightAssemblyNameMapping(); > } > > // TODO: This will not be necessary as it will eventually move down > into the host > private void LoadSilverlightAssemblyNameMapping() > { > AssemblyName clrAssembly = new > AssemblyName(typeof(object).Assembly.FullName); > foreach (string asm in new string[] { "mscorlib", "System", > "System.Core", "System.Xml.Core" }) > { > clrAssembly.Name = asm; > _assemblyFullNames.Add(asm.ToLower(), clrAssembly.FullName); > } > > _assemblyFullNames.Add("system.silverlight", "System.SilverLight, > Version=1.0.0.0, PublicKeyToken=b03f5f7f11d50a3a"); > _assemblyFullNames.Add("agclr", "agclr, Version=0.0.0.0, > PublicKeyToken=b03f5f7f11d50a3a"); > _assemblyFullNames.Add("microsoft.visualbasic", > "Microsoft.VisualBasic, Version=8.1.0.0, PublicKeyToken=b03f5f7f11d50a3a"); > > AssemblyName dlrAssembly = new > AssemblyName(typeof(PlatformAdaptationLayer).Assembly.FullName); > foreach (string asm in new string[] { > "Microsoft.Scripting", > "Microsoft.Scripting.Silverlight", > "IronPython", > "IronPython.Modules", > "Microsoft.JScript.Compiler", > "Microsoft.JScript.Runtime", > "Microsoft.VisualBasic.Compiler", > "Microsoft.VisualBasic.Scripting", > "Ruby"}) > { > dlrAssembly.Name = asm; > _assemblyFullNames.Add(asm.ToLower(), dlrAssembly.FullName); > } > } > > protected string LookupFullName(string name) > { > AssemblyName asm = new AssemblyName(name); > if (asm.Version != null || asm.GetPublicKeyToken() != null || > asm.GetPublicKey() != null) > { > return name; > } > return _assemblyFullNames.ContainsKey(name.ToLower()) ? > _assemblyFullNames[name.ToLower()] : name; > } > > } > > This allows for IronPython.Modules to be loaded by the host, which is the > exception you were getting. > > This is *a lot* to get IronPython hosted in Silverlight! This work was done > for the DLR/Silverlight integration effort, however simple hosting in > Silverlight shouldn't be this hard. I wouldn't be surprised if we decided to > move this bit into the DLR host. =) > > Let me know if you have any other questions, > > ~Jimmy > > >> -----Original Message----- >> From: [EMAIL PROTECTED] [mailto:users- >> [EMAIL PROTECTED] On Behalf Of Michael Foord >> Sent: Monday, September 03, 2007 2:24 PM >> To: Discussion of IronPython >> Subject: [IronPython] Hosting IronPython in a Silverlight App >> >> Hello all, >> >> I'm experimenting with hosting IronPython in a silverlight (1.1 alpha >> refresh) app. >> >> When I write C# code that uses the PythonEngine it works fine when >> access *from IronPython code*. >> >> If I use the same code as 'code behind', then it throws an exception >> "The method or operation is not implemented." >> >> (At the line "PythonEngine pe = PythonEngine.CurrentEngine;") >> >> The code is: >> >> using System; >> using System.Windows; >> using System.Windows.Controls; >> using System.Windows.Documents; >> using System.Windows.Ink; >> using System.Windows.Input; >> using System.Windows.Media; >> using System.Windows.Media.Animation; >> using System.Windows.Shapes; >> using IronPython.Hosting; >> using Microsoft.Scripting; >> >> namespace EmbeddedWithCodeBehind >> { >> public partial class Page : Canvas >> { >> public void Page_Loaded(object o, EventArgs e) >> { >> // Required to initialize variables >> InitializeComponent(); >> >> try >> { >> PythonEngine pe = PythonEngine.CurrentEngine; >> string code = "lambda x: x.upper()"; >> Function<string, string> func = >> pe.EvaluateAs<Function<string, string>>(code); >> >> string x = "i'm talking loudly"; >> string result = func(x); >> textBlock.Text = result; >> } >> catch (Exception ex) >> { >> textBlock.Text = ex.Message; >> } >> >> } >> } >> } >> >> >> >> The XAML is: >> >> <Canvas x:Name="parentCanvas" >> xmlns="http://schemas.microsoft.com/client/2007"; >> xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"; >> Loaded="Page_Loaded" >> >> x:Class="EmbeddedWithCodeBehind.Page;assembly=ClientBin/EmbeddedWithCod >> eBehind.dll" >> Width="640" >> Height="480" >> Background="White" >> > >> >> <TextBlock x:Name="textBlock"></TextBlock> >> >> </Canvas> >> >> >> Everything else is the default from an Orcas beta 2 new Silverlight >> project. >> >> Anyone got any clues as to what is happening? >> >> Thanks >> >> Michael Foord >> http://www.ironpython.info/ >> _______________________________________________ >> Users mailing list >> Users@lists.ironpython.com >> http://lists.ironpython.com/listinfo.cgi/users-ironpython.com >> >> ------------------------------------------------------------------------ _______________________________________________ Users mailing list Users@lists.ironpython.com http://lists.ironpython.com/listinfo.cgi/users-ironpython.com
