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The calling thread must be STA

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BusyIndicator
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John Giblin
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John Giblin asked on 29 Mar 2011, 10:00 PM
I am getting this when I copy the Busy Indicator example

The calling thread must be STA, because many UI components require this.

Does anyone have any ideas

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George
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answered on 04 Apr 2011, 02:46 PM
Hi John,

 
Please make sure you use Dispatcher class in order to access UI components.

If this doesn't help, can you please give us more information about your scenario? Which example do you use? 

Best wishes,
George
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fred williams
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answered on 02 May 2011, 05:02 AM
Could you please provide an example of using the dispatcher class to access a UI component? I'm trying to display a busy indicator while repopulating a treeview when the user double clicks a treeviewitem and I'm receiving the same STA error.

I get the error when I try to instantiate a new RadTreeView object.
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George
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answered on 05 May 2011, 10:04 AM
Hi John,

 
Thank you for contacting us.

You can find the attached sample project. On a button click new items for the RadTreeView are generated and added while the busy indicator is shown. On a second click, the process is stopped. 

I hope this helps.


Kind regards,
George
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Sandi Markon
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answered on 19 Sep 2012, 09:29 AM
 
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George
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fred williams
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