How many time can i use a featureset variable?

Permanently deleted user

November 18, 2015 15:10

I have a featureset variable returned from a query task.  I want get the some info from the first feature of the featureset, e.g. fsElevCert.features(0).attributes("STREET_ADDRESS").ToString().  Then i want to loop through the featureset to get the information from each feature.  I got serialization error  when i start to loop through the featureset.  I am wondering I can only use the featureset one time.  I have to run querytask again to get the data.

 

Please help.

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  Permanently deleted user

  November 18, 2015 19:23

  Hi Yinghong Li

   

  what Activities are you performing in this loop? Are you using an Alert or some other activity that is a client Activity rather than a server Activity?

   

  That is usually when you get this sort of error.

   

  Would you like to post the content of your workflow for people to review?

   

  Regards

   

  Ralph Price

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  Permanently deleted user

  November 18, 2015 19:44

  my xaml is more than 32000 so i can not post even part of it.

   

  Here is the squence of it:

   

  1.  query task to create featureset.

   

  2.  temp= fsElevCert.features(0).attributes("STREET_ADDRESS").ToString()

   

  3.  foreach<feature> in featureset

   

          value="Lowest Adjacent Grade:    "+feature.attributes("LOWEST_ADJACENT").ToString()+ System.Environment.NewLine+"Finished Floor Elevation:    "+feature.attributes("FINISHED_FLOOR").ToString()+System.Environment.NewLine+ "Base Flood Elevation:     "+feature.attributes("BASE_FLOOD").ToString()+System.Environment.NewLine+System.Environment.NewLine+"Vertical Datum: "+feature.attributes("VERTICAL_DATUM").ToString()+System.Environment.NewLine+System.Environment.NewLine+"Date: "+feature.attributes("CERTIFICATE_DATE").ToString()

   

  Step 2 worked fine.  I got error on step3.  I tried to put query task after step2 and it did not work either.

   

  Thanks.

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  Permanently deleted user

  December 02, 2015 17:24

  Thanks Ralph.

   

  I found out what caused the problem.  I can not put alert inside of featureset loop.  

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  Permanently deleted user

  December 02, 2015 17:25

  i found out i can use the feature set variable many times, at least 2.

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  Permanently deleted user

  July 10, 2017 04:05

  I confirm: you cannot put an Alert() in a ForEach loop..  WHY!?      I've wasted a lot of time.

   

     

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  Nico Burgerhart

  July 10, 2017 18:54

  In the For Each loop in the example I see Foreach item in FeatureSet1 This should be Foreach item in FeatureSet1.Features

   

   

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