When I run the following XAML, I get:

- An exception; or
- A infinite loop (100% CPU, no workingset delta)

<ItemsControl Grid.Row="2" Margin="5,5,5,5"
ItemsSource="{Binding Path=Attributes}">
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<StackPanel Orientation="Vertical" />
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
<ItemsControl.ItemTemplate>
<DataTemplate>
<StackPanel> ***
<Rectangle Height="100" Width="20" Fill="Red" />
</StackPanel>
etc.



Here is the wierd part: if I remove the <StackPanel> ***, it works fine.

Any thoughts?

One thing I forgot to mention, is that XAMLPad runs it fine - works, no
exceptions of CPU saturation.

Wierd huh.

--
Regards, Fil.

OK, here is the really wierd part. This version works fine:

<ItemsControl Grid.Row="2" Margin="5,0,5,5"
ItemsSource="{Binding Path=Attributes}">
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<StackPanel Orientation="Vertical" />
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
<ItemsControl.ItemTemplate>
<DataTemplate>
<Grid/>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>

... but if "<Grid/>" gets split out into "<Grid><Grid/>" then it breaks. For
the record, under VS2005 there is an exception thrown: "Object reference not
set to an instance of an object." at -

public static void Main() {

System.Threading.Thread.CurrentThread.SetApartmentState(System.Threading.ApartmentState.STA);
XmlViewer2.MyApp app = new XmlViewer2.MyApp();
app.InitializeComponent();
app.Run(); // <== exception thrown here
}

... not very helpful.

All forms work under XAMLPad, but they dont under EID - due to other
necessary parts of the XAML that the designer can't handle at this stage.

ummm... do you mean <grid></grid> and not <grid><grid/>? The latter leaves
an unclosed <grid> tag.

"Fil Mackay" <FilMackay@discussions.microsoft.com> wrote in message
news:85B11D46-30C7-4557-88D7-3046BFFA206D@microsoft.com...
> OK, here is the really wierd part. This version works fine:
>
> <ItemsControl Grid.Row="2" Margin="5,0,5,5"
> ItemsSource="{Binding Path=Attributes}">
> <ItemsControl.ItemsPanel>
> <ItemsPanelTemplate>
> <StackPanel Orientation="Vertical" />
> </ItemsPanelTemplate>
> </ItemsControl.ItemsPanel>
> <ItemsControl.ItemTemplate>
> <DataTemplate>
> <Grid/>
> </DataTemplate>
> </ItemsControl.ItemTemplate>
> </ItemsControl>
>
> .. but if "<Grid/>" gets split out into "<Grid><Grid/>" then it breaks.
> For
> the record, under VS2005 there is an exception thrown: "Object reference
> not
> set to an instance of an object." at -
>
> public static void Main() {
>
> System.Threading.Thread.CurrentThread.SetApartmentState(System.Threading.ApartmentState.STA);
> XmlViewer2.MyApp app = new XmlViewer2.MyApp();
> app.InitializeComponent();
> app.Run(); // <== exception thrown here
> }
>
> .. not very helpful.
>
> All forms work under XAMLPad, but they dont under EID - due to other
> necessary parts of the XAML that the designer can't handle at this stage.
>

"Winthrop Chan" wrote:
> ummm... do you mean <grid></grid> and not <grid><grid/>? The latter leaves
> an unclosed <grid> tag.

Errk.. um.. yes. (it did parse both times

I had the exact same behavior while replacing the ItemsPanel on a
StackPanel...

The syntaxt thing about where the / goes is not relevant in this case
however...

In my case, I received an error indicating that the DataTemplate could
only have one child...

When I tried out of the blue to put <WrapPanel />, it started
working...

I am wondering if it could not mean that the space between <WrapPanel>
and <WrapPanel> is somehow interpretted for the ItemTemplate as a
"Children"(Children is the default content property for the Panel
classes) element while nothing is assigned to the "content" when
<WrapPanel /> notation is used

(this is a wild guess, and your opinion is welcomed)...

Marcus