Check fro blank attribute?

Permanently deleted user

June 26, 2013 11:13

Folks,

hopefully an easy one for you all.

I currently have a workflow that needs to assign a new name to a fire that the user selects (ends up in the feature set selectedFS). What I need to do is check first to see if the field for INCIDENT_NAME is blank, so I use the following in an If..then

selectedFS.First().Attributes("INCIDENT_NAME").toString() is Nothing   (and tried = "")

but it throws a

" Workflow Error - Exception... blah...

Object reference not set to an instance of an object ."

Obviously I'm trying to check against something that is not set and hence the problem! I've tried assigning a new variable to selectedFS.First().Attributes("INCIDENT_NAME").toString() - but this gives the same error!

any ideas how to quickly and easily check for a blank attribute value?

many thanks

Gareth

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  Permanently deleted user

  June 26, 2013 11:25

  Hi Gareth

  first thing is that there will likely be no Attribute returned is if the value is NULL in the database ( as compared to empty string).

  So need to test if that Attribute exists first and then check what the value is ie:

  If Activity with the test being:

    not selectedFS.First().Attributes("INCIDENT_NAME") is nothing

  and if that is sucessful then

  If Activity with the test being:

  selectedFS.First().Attributes("INCIDENT_NAME").Value = ""

  then do stuff.

  Makes sense?

  Ralph Price

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  Permanently deleted user

  June 26, 2013 11:36

  Ralph, 

  I'll give it a crack.. thanks mate..

  GF

   

  edit: worked like a treat! thanks again! Too logical for a non-programmer like me ; )

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