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Asked: 2026-05-11T00:42:00+00:00

I’m trying to implement the Media Player custom field control described in this MSDN

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I’m trying to implement the Media Player custom field control described in this MSDN article: http://msdn.microsoft.com/en-us/library/aa981226.aspx

I created a custom site column (of type Link) in a custom content type and followed all the instructions to deploy the solution into SharePoint and add the control to a Page Layout.

However, when I create a page based on a page layout that uses this field control, nothing is displayed in either Edit or View mode of the page.

I dug around in the SharePoint logs, and at the time the page is loaded, I see the following error in ULS:

Control template ‘MediaPlayerFieldControl’ does not exist.

If you’ve implemented this control, did you have to implement anything other than what the article details? Pretty sure I don’t need an ASCX here because the control is handling rendering the media player.

Thank you

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1 Answer

  1. Figured this out …

    I had added the SafeControl entry manually at first to my web.config, and for some reason that didn’t work. I’m now including it in manifest.xml like this:

    <Assembly DeploymentTarget='GlobalAssemblyCache' Location='MyControlAssembly.dll'>   <SafeControls>     <SafeControl Assembly='MyControlAssembly, Version=1.0.0.0, Culture=neutral, PublicKeyToken=07085c2a3fb711ee' Namespace='MyControlAssembly' TypeName='*' Safe='True' />   </SafeControls> </Assembly>

    Not sure what the difference there was, but this did the trick

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