[IronPython] Using WebClient with Gestalt

Lukas Cenovsky cenovsky at bakalari.cz
Thu Oct 28 17:32:31 CEST 2010

On 28.10.2010 16:34, Mark Heath wrote:
> I'm writing an IronPython Silverlight application and trying to use 
> WebClient to download some xaml so I can use XamlReader.Load to load 
> it. I have the following code in a .py file that is referenced by my 
> main HTML page:
> wc = WebClient()
> wc.DownloadStringCompleted += self.xamlDownloaded
> wc.DownloadStringAsync(Uri('star.xaml',UriKind.Relative))
> however, in the completed handler I get a SystemError - not found. I 
> know that the xaml file is present, so I'm wondering if it is looking 
> for it relative to dlr.xap. I didn't get much more success with an 
> absolute Uri - just a SystemError with no message at all, which I 
> guess could be due to Silverlight cross-domain request permissions.
> Any suggestions for how I can get this working?
> And another quick question while I'm at it. Are there any known issues 
> with IronPython and data-binding in Silverlight? I converted an 
> IronPython WPF app to Silverlight that was using MVVM, but in 
> Silverlight none of the bindings worked at all.

For binding, you have to user clrtype.py. See my blog: 

-- Lukáš

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