I am attempting to prove out that you can use a full trust proxy with SharePoint online. If you take a look at SPProxyOperation on MSDN, you'll see the little note that says Available In SharePoint Online under the assembly name. Great, fantastic!

But now how am I supposed to register my proxy with the user code service? All examples that I can find (that refer to a local environment), deploy a Farm solution and run the following code:

public override void FeatureActivated(SPFeatureReceiverProperties properties)
    SPUserCodeService userCodeService = SPUserCodeService.Local;
    if (userCodeService != null)
        string assemblyName = this.GetType().Assembly.FullName;
        SPProxyOperationType SendEmailOperation = new SPProxyOperationType(assemblyName, typeof(SendEmailProxy).FullName);
    else { throw new ApplicationException("User Code Service not running."); }

Well the issue is pretty straight forward. Having a look at SPUserCodeService's documentation, it does NOT state Available In SharePoint Online. If that is the case, how am I supposed to register my proxy, which is clearly (er, according to MSDN) supported.

  • 1
    Interesting. I wonder why this question received a down vote. – Tim Gabrhel Sep 14 '11 at 15:19

The answer is simple. There is no way for you to register custom operations, but if Microsoft created and published these operations you could use them from within the sandbox.

  • That's the thing...If I can't register them, then how can I use them? It would appear to me that you require both halves to make a whole. – Tim Gabrhel Sep 13 '11 at 21:19
  • imagine MS (or other hosting partner) register their custom proxies for you to use... – Wictor Wilen MCA MCM MVP Sep 14 '11 at 5:24
  • Thanks Wictor..Do you have any informational links? I'm not entirely sure of the services they provide to do such a thing. Are you referring to Azure? – Tim Gabrhel Sep 14 '11 at 13:39
  • MSFT will not accept any requests of this kind as of now, I don't know about the future. You have to think outside the box, or go for SharePoint Online Dedicated. – Wictor Wilen MCA MCM MVP Sep 14 '11 at 15:57
  • @Tim - Your best bet to see what they offer (what things are possible in the sandbox) is to check out the SharePoint Online Development Center on MSDN (msdn.microsoft.com/en-us/sharepoint/gg153540.aspx). If you can't do it in SharePoint, look to Windows Azure (IMHO) which can call back into SharePoint Online (Office365). Resources here (andrewconnell.com/blog/archive/2011/09/02/…) and in this post for Azure>SP (blogs.msdn.com/b/cjohnson/archive/tags/sharepoint+online). – Andrew Connell Sep 30 '11 at 10:06

Of course Wictor is correct. Here is the exact place in MSDN where the thing is stated:

Because the assembly with the full-trust proxy operation must be deployed by a farm administrator as a farm solution, this technique cannot be used when farm deployment is not an option, such as when your solution is to be deployed to Microsoft SharePoint Online. [...]

So I guess you have to go with SP Client Object Model and/or Silverlight.

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