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Embedding Sandbox Web Parts into Page Layouts and Master Pages

Note – this is applicable to both SharePoint 2010 and SharePoint 2013 … and despite rumours of “The Sandbox is deprecated” many features in SharePoint 2013 rely on the Sandbox so I don’t see it going anywhere for the time being.

This is something that I have been told many times, it is not possible to embed a server control developed in the Sandbox onto a Page Layout or Master Page because you can’t add the appropriate Tag Prefix to the header.

If you consider the standard way of doing this for a Farm / Full Trust solution:

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In the sandbox we obviously can’t reference the Assembly in the same way because (a) it isn’t deployed to the GAC / BIN folders and (b) it runs in a completely different process so won’t be JIT compiled by the .Net Framework… but there is a solution!

Microsoft.SharePoint.WebPartPages.SPUserCodeWebPart allows you to embed a Web Part from an assembly running in the Sandbox.

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You still need the “AssemblyFullName” attribute. I’ve found the easy way to get this is to add a feature receiver to a Feature in Visual Studio then copy-paste it from the Manifest in Visual Studio (which contains the full text that you need).

So that’s it! Happy coding!

By Martin Hatch, Associate Principal SharePoint Consultant
www.martinhatch.com

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Our technical team contribute with blogs from their respective specialities, be that Azure, SQL, BizTalk, SharePoint, Xamarin and more. From the lead architect to developers and testers, each person provides content straight from their experience.

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