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Home/ Questions/Q 3243532
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Editorial Team
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Editorial Team
Asked: May 17, 20262026-05-17T18:26:40+00:00 2026-05-17T18:26:40+00:00

I developed some userControl that contain some information check on the ‘IsVisible’ method (

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I developed some userControl that contain some information check on the ‘IsVisible’ method ( override method ).

When i using this usercontrol on some window – i see some error because the ‘IsVisible’ method look for some variable that is set on run-time.

How can i check if I’m in design time and the system is not running ?

Thanks for the help.

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  1. Editorial Team
    Editorial Team
    2026-05-17T18:26:41+00:00Added an answer on May 17, 2026 at 6:26 pm

    DesignerProperties.GetIsInDesignMode(this); This would return true if you are in design-time.

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