Can't access a System object in xaml

[=?Utf-8?B?QkJN?=]

Hi,

I have this xaml code that I'm trying to use in a Window...

<ListBox xmlns:sys="clr-namespace:Syste m;assembly=msco rlib" Grid.Column="2"
Grid.RowSpan="2 ">
<Button>Click for a surprise</Button>
<Expander>
Details
<StackPanel>
<sys:DateTime >1/1/2007</sys:DateTime>
<sys:DateTime >2/1/2007</sys:DateTime>
<sys:DateTime >3/1/2007</sys:DateTime>
</StackPanel>
</Expander>
</ListBox>

The problem is with the <sys:DateTimeel ements. I get a compiler warning
on these saying that StackPanel has "invalid" child elements. The code will
not run.

If I put the <sys:DateTimeel ements directly under the listbox (eliminating
the button and the expander), I get the same warning, but the code will run
and show the date correctly.

I'm using VS2005 with .Net 3.0 installed.

Why isn't <sys:DateTimere cognized? What am I doing wrong here?

BBM

[Walter Wang [MSFT]]

Hi BBM,

The StackPanel can only use UIElement as child elements. You can use a
ListBox instead:

<StackPanel>
<ListBox>
<sys:DateTime >1/1/2007</sys:DateTime>
<sys:DateTime >2/1/2007</sys:DateTime>
<sys:DateTime >3/1/2007</sys:DateTime>
</ListBox>
</StackPanel>
Hope this helps.

Regards,
Walter Wang (wa****@online. microsoft.com, remove 'online.')
Microsoft Online Community Support

=============== =============== =============== =====
When responding to posts, please "Reply to Group" via your newsreader so
that others may learn and benefit from your issue.
=============== =============== =============== =====

This posting is provided "AS IS" with no warranties, and confers no rights.

[Walter Wang [MSFT]]

Hi BBM,

I'm writing to check the status of this post. Please feel free to let me
know if there's anything else I can help. Thanks.

Regards,
Walter Wang (wa****@online. microsoft.com, remove 'online.')
Microsoft Online Community Support

=============== =============== =============== =====
When responding to posts, please "Reply to Group" via your newsreader so
that others may learn and benefit from your issue.
=============== =============== =============== =====

This posting is provided "AS IS" with no warranties, and confers no rights.

[=?Utf-8?B?QkJN?=]

Hi Walter,

I got my code to work using your suggestions, but
could you answer my last questions?

1) Is it normal to get compiler warnings on the direct use of .Net classes
(like DateTime) from xaml? If so, why?

2) Is there a (concise) place where I can learn what items can be
"children" of other items in WPF?

Thanks.
""Walter Wang [MSFT]"" wrote:

Hi BBM,

I'm writing to check the status of this post. Please feel free to let me
know if there's anything else I can help. Thanks.

Regards,
Walter Wang (wa****@online. microsoft.com, remove 'online.')
Microsoft Online Community Support

=============== =============== =============== =====
When responding to posts, please "Reply to Group" via your newsreader so
that others may learn and benefit from your issue.
=============== =============== =============== =====

This posting is provided "AS IS" with no warranties, and confers no rights.

[Walter Wang [MSFT]]

Hi BBM,

I'm writing to check the status of this post. Please feel free to let me
know if there's anything else I can help. Thanks.

Regards,
Walter Wang (wa****@online. microsoft.com, remove 'online.')
Microsoft Online Community Support

=============== =============== =============== =====
When responding to posts, please "Reply to Group" via your newsreader so
that others may learn and benefit from your issue.
=============== =============== =============== =====

This posting is provided "AS IS" with no warranties, and confers no rights.