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Migration Activity in WF

.NET Framework (current version)

.NET Framework 4.6.1 provides the T: System.Activities.Statements.Interop activity for executing activities that derive from T:System.WorkflowModel.Activities.Activity within a workflow that is based on Activity. For more information, see the Windows Workflow Foundation (WF) Migration Guidance section.


The Interop activity does not appear in the workflow designer toolbox unless the workflow's project has its Target Framework setting set to .Net Framework 4 or higher.

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