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POCode Activities being skipped after AddToCollection<T> in WF 4.0
 

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  1. POCode Activities being skipped after AddToCollection<T> in WF 4.0
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    <p>I can't figure out where my program flow is going in my WF 4 application. I have a Flow chart with a series of an AddToCollection and two code activities. When I step through, it hits the AddToCollection breakpoint and then just continues, skipping my code activities as if they weren't even there. I have no idea where to look because I am very new to WF 4. </p> <p>Here is a XAML snippet if it helps:</p> <pre><code>&lt;AddToCollection x:TypeArguments="x:String" Collection="[EmailList]" DisplayName="AddToCollection&amp;lt;String&amp;gt;" Item="abc@blah.com" /&gt; &lt;FlowStep.Next&gt; &lt;FlowStep x:Name="__ReferenceID0"&gt; &lt;local:CompileEmailBody EmailBody="{x:Null}" EmailList="[EmailList]" Products="[Products]" SwProduct="[SwProduct]" Type="Request" /&gt; &lt;FlowStep.Next&gt; &lt;FlowStep x:Name="__ReferenceID1"&gt; &lt;local:SendEmail Message="{x:Null}" Body="[EmailBody]" EmailList="[EmailList]" /&gt; &lt;/FlowStep&gt; &lt;/FlowStep.Next&gt; &lt;/FlowStep&gt; </code></pre> <p>Anything helps, I have no idea where to start! Cheers</p> <p><strong>UPDATE</strong> This is how I run the workflow from my controller:</p> <pre><code> inputs.Add("ProductLines", plArray); inputs.Add("SwProduct", prodString); var wfApp = new WorkflowApplication(new VersionedCompositionWorkflow(), inputs); wfApp.Extensions.Add(new TraceTrackingParticipant()); wfApp.Run(); </code></pre> <p><strong>Answer</strong> It turns out that I had not initialized the List that the collection was mapping to. For some reason I didn't get any errors with WorkflowApplication but I did with WorkflowInvoker I will give a right answer to anyone who can tell me why this could have happened.</p> <p>Cheers</p>
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    1. USonetwopunch
    1. USonetwopunch
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    1. COIf your host is WorkflowServiceHost then enable trace and tracking. And if using WorkflowApplication then enable tracking. Analyze trace or tracking table data then you can identify the issue behind this behavior.
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      1. POCode Activities being skipped after AddToCollection<T> in WF 4.0
      1. USVivek
    2. CO@Vivek you might want to [read this question on Meta](http://meta.stackexchange.com/questions/118582/what-is-an-acceptable-answer). Also, where are the code activities? It might be easier to snap a pic of the relevant part of the workflow in the designer and add it to the question...
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      1. POCode Activities being skipped after AddToCollection<T> in WF 4.0
      1. USWill
    3. COSee [Troubleshooting WorkflowServices](http://blogs.msdn.com/b/rjacobs/archive/2011/12/16/troubleshooting-workflow-services-with-diagnostic-logging.aspx) and [Three Simple Rules for Better Debugging with WorkflowApplication](http://blogs.msdn.com/b/rjacobs/archive/2012/07/05/three-simple-rules-for-better-debugging-with-workflowapplication.aspx)
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      1. POCode Activities being skipped after AddToCollection<T> in WF 4.0
      1. USRon Jacobs
 

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