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Editorial Team
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Asked: 2026-05-16T01:58:20+00:00

I have downloaded the ComponentOne Silverlight controls, and am trying to add the HTMLHost

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I have downloaded the ComponentOne Silverlight controls, and am trying to add the HTMLHost control to one of my UserControls.
When I run the App, I get the message

To use this control the silverlight plugin must have its ‘windowless’ Property set to true

Does anyone know how I set this property?

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1 Answer

  1. Editorial Team

    As documented here, you’ll need to add this:

    <param name="windowless" value="bool"/>

    Complete Example:

    <object data="data:application/x-silverlight-2," type="application/x-silverlight-2" width="100%" height="100%">
    <param name="source" value="ClientBin/TestSilverlightStuff.xap"/>
    <param name="onError" value="onSilverlightError" />
    <param name="background" value="white" />
        <param name="windowless" value="true"/>
    <param name="minRuntimeVersion" value="4.0.50401.0" />
    <param name="autoUpgrade" value="true" />
    <a href="http://go.microsoft.com/fwlink/?LinkID=149156&v=4.0.50401.0" style="text-decoration:none">
        <img src="http://go.microsoft.com/fwlink/?LinkId=161376" alt="Get Microsoft Silverlight" style="border-style:none"/>
    </a>
</object>
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