Infopath async callback DOM

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Nick - 16 May 2005 17:39 GMT

Does anyone know how to use callback functions in infopath managed code to
and use the application and XDocument object model? When ever I try, it says
something like cannot be called when the object is in this state.

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Scott L. Heim [MSFT] - 17 May 2005 18:34 GMT

Hi Nick,

Can you provide some additional information on what you are doing and what
is failing? For instance, the following code works for me on the click
event of a button using VS.NET:

Dim xNode
xNode =
thisXDocument.DOM.selectSingleNode("//my:myFields/my:field1")
MsgBox(xNode.text)

Thanks,

Scott L. Heim
Microsoft Developer Support

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

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Nick - 26 May 2005 19:32 GMT

Yes, it has to do with the delagates and async callback operation. Im
speculating, because I dont fully understand the "under - the - hood" stuff
for the async callback, but if its on a different thread, then something is
preventing access to the XDocument DOM.

> Hi Nick,
>
[quoted text clipped - 13 lines]
>
> This posting is provided "AS IS" with no warranties, and confers no rights

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Nick - 26 May 2005 21:51 GMT

Here is the exact error:

{"Operation is not valid due to the current state of the object." }

I tried to use this from the global variable as well as passing it in the
delegate / async worker function. Both yield the same result.

> Hi Nick,
>
[quoted text clipped - 13 lines]
>
> This posting is provided "AS IS" with no warranties, and confers no rights

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