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I have a custom workflow action derived from SequenceActivity

  protected override ActivityExecutionStatus Execute(ActivityExecutionContext executionContext)
        {
            var current = SPContext.Current;
            //current is null
         }

The code I copied is largely from another custom action, which is working as expected. I definitely missed something when copying things over and creating the new action, but I am not sure where to look.

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There are normally 2 places to check: your Custom Activity and your .actions file. See my answer here stackoverflow.com/a/1257293/98933 –  Kit Menke♦ Aug 21 at 18:52
 
Kit, I checked out your suggestion. I added a Dependency prop for context and a parameter in the .actions file. The "Context" dependency property is null when I step into the action's Execute method. Could there be something I am missing higher up? –  SharepointHater Aug 21 at 20:12

1 Answer

up vote 1 down vote accepted

the problem your getting is correct and should be null ;) why? because workflow run under different thread to the current context ;) so instead of SPContext.Current you need to use WorkflowContext!

http://msdn.microsoft.com/en-us/library/microsoft.sharepoint.workflowactions.workflowcontext_properties.aspx

http://msdn.microsoft.com/en-us/library/microsoft.sharepoint.workflowactions.workflowcontext.aspx

public static DependencyProperty __ContextProperty = System.Workflow.ComponentModel.DependencyProperty.Register("__Context", typeof(WorkflowContext), typeof(YourActivityClass));

 [Description("Context")]
 [Category("Context")]
 [Browsable(true)]
 [DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)]
 public WorkflowContext __Context
 {
     get
     {
         return ((WorkflowContext)(base.GetValue(YourActivityClass.__ContextProperty)));
     }
     set
     {
         base.SetValue(YourActivityClass.__ContextProperty, value);
     }
 }

more details on the above code is here:

http://blogs.microsoft.co.il/blogs/davidbi/archive/2008/07/21/How-to-get-the-context-item-in-workflow-activity-sharepoint.aspx

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