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Asked: 2026-06-04T12:08:49+00:00

I am searching for the reference System.Windows.UIElement but I cannot find it in the

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I am searching for the reference System.Windows.UIElement but I cannot find it in the .NET environment. I need to use the type or name UIElement. Do you have an idea?

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  1. Editorial Team

    If you search MSDN for UIElement you’ll find the following information on this page:

    • class UIElement is in the System.Windows namespace, so you’ll have to use System.Windows.UIElement or add a using System.Windows directive
    • UIElement is in the PresentationCore assembly, so you’ll have to add a reference to PresentationCore.dll
    • UIElement is available in .NET versions 3.0 and newer
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