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A Brief Look at Sandboxed Solution Restrictions

As stated earlier, only a restricted subset of the SharePoint object model is available to sandboxed solutions. These restrictions reduce the risk of badly written custom code from destabilizing the farm. The allowed subset of the object model includes

• Microsoft.SharePoint namespace, except SPSite constructor, SPSecurity object, SPWorkItem and SPWorkItemCollection, SPAlertCollection.Add, SPAlertTemplateCollection.Add, SPUserSolution and SPUserSolutionCollection, and SPTransformUtilities

• Microsoft.SharePoint.Navigation namespace

• Microsoft.SharePoint.Utilities namespace, except SPUtility.SendEmail and SPUtility.GetNTFullNameandEmailFromLogin

• Microsoft.SharePoint.Workflow namespace

• Microsoft.SharePoint.WebPartPages ...