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Microsoft appears to be removing code-based sandbox solutions in SharePoint online.

I have been using an on-premise SharePoint Enterprise solution since 2012 that included a code-based .wsp sandbox solution that shows SharePoint Version in Office Documents, available for free at CodePlex.

As such, can anybody recommend a path for me having the existing .wsp solution converted to a SharePoint online add-in/app, please? I am not a developer so wouldn't know where to start, who to approach or whether this is even possible.

Many thanks,

  • am also facing the same issue so here I started developing apps for web parts which was developed in sandbox solutions and i dont think you can convert any sandbox .wsp/solution to the apps beacuse in Apps the entire logic is written in javascript. – sharepoint2013 Sep 30 '16 at 9:52
  • as it is my opinion am not saying that there wouldn't be such procedure – sharepoint2013 Sep 30 '16 at 9:53
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There is no direct option to convert SandBox .wsp in App. It will be a complete renewal. The APIs you have used in SandBox solutions are also available in SharePoint App. There are two types of App in SharePoint like

  1. SharePoint Hosted App. You have to develop it using JSOM or REST API.
  2. Provider Hosted App. You can use CSOM here.

So start writing App which one suits you best and ask here again if you are unable to find any equivalent API of your SandBox solution in JSOM, REST API or CSOM. You will find several tutorials in web for developing SharePoint Apps and that's why I am not providing any reference here.

  • It is not completely true that APIs used in Sandbox are available to Add-in model. Mostly yes, but not always 1:1. Some aren't available in CSMO, but it has improved especially about SharePoint Online. It really depends on what your Sandbox solution consists of – Massimo Prota Oct 1 '16 at 8:20
  • The source code for the sandbox solution can be found here: spversionindocs.codeplex.com/releases/view/52950, can anybody determine whether this can be used in an add-in model please? Many thanks, Phil – Phil G Oct 3 '16 at 14:59

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