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Editorial Team
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Asked: 2026-05-13T07:45:15+00:00

I’m trying to create a custom UserControl that will mimic auto-complete as it works

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I’m trying to create a custom UserControl that will mimic auto-complete as it works within Intellisense using WPF. I’m using a TextBox and a Popup containing a ListBox within my control.

I want to be able to keep keyboard focus set on the TextBox irrespective of whether or not the auto-completion popup is open so that a user can continue typing whilst simultaneously using up/down controls or the mouse to select elements in the popup to autocomplete the text. Is there any way this can be done in WPF?

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1 Answer

  1. Editorial Team

    Check out my article on CodeProject, it addresses the issue of the popup specifically.
    A Reusable WPF Autocomplete TextBox

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