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Editorial Team
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Asked: 2026-06-16T10:24:06+00:00

I have a WPF app which has main window started in ‘default’ UI thread.

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I have a WPF app which has main window started in ‘default’ UI thread. I also have several other windows each has its own UI thread (by calling System.Windows.Threading.Dispatcher.Run())

However for a specific reason I would like to have these windows as user controls hosted in the main window.

Is it possible (to have a control which was created in one thread to be hosted in a window created in another thread) ?

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1 Answer

  1. Editorial Team

    Pretty sure the answer is no based on one of the arguments for not using DependencyObject as the base of your ViewModels being threading issues.

    KenB on the subject

    And I quote:

    A DependencyObject has thread affinity – it can only be accessed on the thread on which it was created.

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