WPF XAML Question -

[brad jones]

I have an XAML file that I am loading in IE 7. I get the following:

Startup URI: C:\Users\Brad!\Desktop\RSS.xaml
Application Identity: file:///C:/Windows/Microsoft.Net/Framework/v3.0/WPF/XamlViewer/XamlViewer_v0300.xbap#XamlViewer_v0300.application, Version=3.0.0.0, Culture=neutral, PublicKeyToken=c3bce3770c238a49, processorArchitecture=msil/XamlViewer_v0300.exe, Version=3.0.0.0, Culture=neutral, PublicKeyToken=c3bce3770c238a49, processorArchitecture=msil, type=win32

System.Security.SecurityException: Request for the permission of type 'System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.
   at System.Security.CodeAccessSecurityEngine.Check(Object demand, StackCrawlMark& stackMark, Boolean isPermSet)
   at System.Security.CodeAccessPermission.Demand()
   at MS.Internal.PresentationFramework.SecurityHelper.DemandUnmanagedCode()
   at System.Windows.Window..ctor()

... The list goes on, but the above gives enough detail I believe. I'm guessing I have a simple setting wrong or something. I thought I got around this before, but I've hit the wall again. Maybe it is simply too late in the day after doinng too much .

Anyone have a suggestion for me to get around this so I can run the XAML file?

Thanks,

Brad!


The XAML file I want to run:

  <Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
          xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
          Title="My RSS Reader">

    <Window.Resources>
      <XmlDataProvider x:Key="Blog"
        Source="http://www.codeguru.com/icom_includes/feeds/codeguru/rss-all.xml" />
    </Window.Resources>
    <DockPanel
    DataContext="{Binding Source={StaticResource Blog}, XPath=/rss/channel/item}">
      <TextBox DockPanel.Dock="Top"
        Text="{Binding Source={StaticResource Blog}, 
         BindsDirectlyToSource=true, Path=Source, 
         UpdateSourceTrigger=PropertyChanged}" />
      <Label DockPanel.Dock="Top" Content="{Binding XPath=/rss/channel/title}"
             FontSize="14" FontWeight="Bold" />
      <Label DockPanel.Dock="Top"
        Content="{Binding XPath =/rss/channel/description}" />
      <ListBox DockPanel.Dock="Left" DisplayMemberPath="title"
      ItemsSource="{Binding}" IsSynchronizedWithCurrentItem="True" Width="300" />
      <Frame Source="{Binding XPath=link}" />
    </DockPanel>
  </Window>

[RRelyea]

When you navigate in IE to a XAML file, it is running in a "sandbox".
Inside that sandbox (of lower privileges for the code), Window isn’t allowed. (We want to avoid pop-ups).
So if you replace the 4 instances of “Window” with “Page”, it should work fine.
Thanks, Rob Relyea
Program Manager, WPF Team
http://rrelyea.spaces.live.com

[brad jones]

So if you replace the 4 instances of “Window” with “Page”, it should work fine.
http://rrelyea.spaces.live.com

That makes sense. Thanks.

Unfortunately, I had already tried that, but I hit an error in that Page.Resources isn't an option. As such, where would I put XmlDataProvider setup?

Correction -
I pulled this into Visual Studio (hadn't been using it). Page.Resources is an option. Unfortunately, my code is throwing an exception.

Brad!

[brad jones]

Startup URI: C:\Documents and Settings\Brad!\Desktop\XAML\RSS2.xaml
Application Identity: file:///C:/WINDOWS/Microsoft.Net/Framework/v3.0/WPF/XamlViewer/XamlViewer_v0300.xbap#XamlViewer_v0300.application, Version=3.0.0.0, Culture=neutral, PublicKeyToken=c3bce3770c238a49, processorArchitecture=msil/XamlViewer_v0300.exe, Version=3.0.0.0, Culture=neutral, PublicKeyToken=c3bce3770c238a49, processorArchitecture=msil, type=win32

System.Security.SecurityException: Request for the permission of type 'System.Net.WebPermission, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.
   at System.Security.CodeAccessSecurityEngine.Check(Object demand, StackCrawlMark& stackMark, Boolean isPermSet)
   at System.Security.CodeAccessPermission.Demand()

Seems like the same type of error only related to the web.

[RRelyea]

this is likely related to the fact that your xaml file and the xml file are from 2 different domains??

At least that is what I would investigate...