topic PopupExpression and PopupManager relationship? in .NET Maps SDK Questions

PopupExpression and PopupManager relationship?

artifact — Thu, 12 Sep 2019 00:58:08 GMT

Can anyone explain how to use the PopupExpressions of a PopupDefinition/Popup in relation to the PopupManager?

Let's say I have a simple PopupDefinition defined as below:

{
   "allowDelete":false,
   "allowEdit":false,
   "allowEditGeometry":false,
   "description":"",
   "expressions":[{
      "name":"expr1".
      "title": "Expression Test",
      "expression": "$feature.NAME",
      "returnType":"string"
   }],
   "fields":[{
      "fieldName":"NAME",
      "format":null,
      "isEditable":false,
      "isVisible":true,
      "label":"Name Label",
      "stringFieldOption":"singleLine",
      "tooltip":""
   }],
   "media":[],
   "relatedFeaturesDefinition":null,
   "showAttachments":true,
   "showEditSummary":false,
   "title":"{NAME}"
}

I can set this PopupDefinition to a FeatureLayer, query for Popups and get a result that shows both the Fields and Expressions are available. Passing the Popup to a PopupManager gives me access to the 'DisplayedFields' which I then use to bind to my view. Unfortunately, I don't understand how you access the expressions. I had thought that perhaps they could be referenced as PopupFields by adding additional Field values to the PopupDefinition such as the following:

{
      "fieldName":"{expr1}",
      "format":null,
      "isEditable":false,
      "isVisible":true,
      "label":"Expression Label",
      "stringFieldOption":"singleLine",
      "tooltip":""
}

This however does not appear to work. How does one access PopupExpression results from a PopupManager?

Re: PopupExpression and PopupManager relationship?

artifact — Thu, 19 Mar 2020 17:00:29 GMT

7 months have passed and still no answer.... welcome to wix part 2

Re: PopupExpression and PopupManager relationship?

Anonymous User — Thu, 19 Mar 2020 22:55:42 GMT

Did you also try it without the curly brackets, i.e. "fieldName":"expr1" ?

Re: PopupExpression and PopupManager relationship?

artifact — Mon, 23 Mar 2020 17:50:11 GMT

Thanks for the reply. I have tried it without the brackets. From what I can tell, there is no way to access popup expressions or popup media from the popup manager. I guess we could go into the popupmanager get the popup, then fetch the field value and perform the expression manually, but this seems ridiculous. Sure would be nice if esri or someone who understands the relationship to chime in.