Yeah, unfortunately with the bad error message it's really one of those things you need to have run into at some point. :(
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Derek Ealy Sent: Tuesday, September 23, 2008 1:30 PM To: Discussion of IronPython Subject: Re: [IronPython] ArgumentTypeException when accessing C# objects, need help! Man, that worked! I've been really bummed about not figuring this out for the past day or so. Thanks a lot for the tip!!!!!! Derek -------------------------Derek Blogging at: ---------------------------------------- > From: [EMAIL PROTECTED] > To: [email protected] > Date: Tue, 23 Sep 2008 12:26:55 -0700 > Subject: Re: [IronPython] ArgumentTypeException when accessing C# objects, > need help! > > This is probably due to a loader context issue. Effectively what's happening > is your clr.AddReference() from your Python script is probably ultimately > doing a LoadFile (putting the assembly into a special context) and otherwise > your assembly is getting loaded normally - so you end up w/ two copies of the > same assembly loaded but w/ different contexts. > > This is much easier to do from 2.0 where you can just call > ScriptRuntime.LoadAssembly and pass it in your assembly object (e.g. > typeof(Entry).Assembly). It looks like you're using 1.0 though... What > might be easiest these is to right a small piece of Python code which does: > > import clr > clr.AddReference(myAssembly) > > where myAssembly is a global that points to typeof(Entry).Assembly. > > Alternately if your assembly has a strong name (maybe it needs to be in the > GAC as well?) you could do clr.AddReference() with the fully qualified strong > name. > > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Derek Ealy > Sent: Tuesday, September 23, 2008 12:07 PM > To: [email protected] > Subject: [IronPython] ArgumentTypeException when accessing C# objects, need > help! > > > Hi > > I'm pretty new to this whole IronPython thing and have a problem that's been > hanging me up for a couple of days now. I have a fairly large C# application, > and we've recently added IronPython to the mix so we can support dynamic > scripting at runtime. > > Users are able to create Python scripts which can manipulate the C# objects > in our main application. The problem that I'm having is when I try to pass a > C# object to a method on another C# object from within the Python script. It > is throwing an ArgumentTypeException: expected Entry got Entry. This is > especially confusing, because it sure looks like the exception is saying that > an Entry object was expected, and that indeed an Entry object is what it got. > > Here is an example of what I'm trying to do: > > // C# code > > PythonEngine py = new PythonEngine(); > > string init = "import clr\n" + > "clr.AddReference(\"TritonConfiguration.dll\")\n" + > "import TritonConfiguration.ValidationReport as ValidationReport\n" + > "import TritonConfiguration.Entry as Entry"; > > py.Execute(init); > > Entry entry = new Entry(); > entry.PrimaryKey.SetValue("Fred"); > Rule rule = new Rule(); > rule.Name = "testRule"; > py.Globals["entry"] = entry; > py.Globals["rule"] = rule; > > string pyLogic = "if entry.PrimaryKey.Value != 'Barney':\n" + > " failure = ValidationReport.RuleFailure('PK is not Barney')\n" + > " failure.ruleName = rule.Name\n" + > " failure.failedEntry = entry\n"; > > py.Execute(pyLogic); > > > > It is the last line in the pyLogic string that causes the > ArgumentTypeException. The failedEntry property of the RuleFailure object is > of type Entry. I'm not sure if there is a problem with the way I'm importing > things from TritonConfiguration.dll, or the assigning and usage of global > variables in Python, or if there's some other thing wrong that I'm completely > unaware of. > > Any suggestions would be greatly appreciated. > > > ------------------------- > Derek > > Blogging at: http://derekealy.com/WordPress > > _________________________________________________________________ > See how Windows Mobile brings your life together-at home, work, or on the go. > http://clk.atdmt.com/MRT/go/msnnkwxp1020093182mrt/direct/01/ > _______________________________________________ > Users mailing list > [email protected] > http://lists.ironpython.com/listinfo.cgi/users-ironpython.com > _______________________________________________ > Users mailing list > [email protected] > http://lists.ironpython.com/listinfo.cgi/users-ironpython.com _________________________________________________________________ See how Windows Mobile brings your life together-at home, work, or on the go. http://clk.atdmt.com/MRT/go/msnnkwxp1020093182mrt/direct/01/ _______________________________________________ Users mailing list [email protected] http://lists.ironpython.com/listinfo.cgi/users-ironpython.com _______________________________________________ Users mailing list [email protected] http://lists.ironpython.com/listinfo.cgi/users-ironpython.com
