Arcade - 'System.InvalidCastException'

girafee — Wed, 31 Aug 2022 07:21:46 GMT

Hello! I have an expression "var d = Dictionary('Accounting', $feature.AssessmentID)\r\nreturn d" and if the value is null, I get an exception:
Values = '((Esri.ArcGISRuntime.RuntimeDictionary<string, object>)result.Result).Values' threw an exception of type 'System.InvalidCastException'. The Arcade expression returns a Dictionary, but it seems like JS can't convert that.

I researched that I could write like this "$feature.AssessmentID +'' " and no exception.

My method:

public override async Task ExecuteAsync(Feature feature) { Esri.ArcGISRuntime.ArcadeExpression ArcadeEvaluatorExpression = new Esri.ArcGISRuntime.ArcadeExpression("var d = Dictionary('Accounting1', $feature.AssessmentID)\r\nreturn d"); // AssessmentID = null ArcadeEvaluator ArcadeEvaluator = new ArcadeEvaluator(ArcadeEvaluatorExpression, ArcadeProfile.FormCalculation); List<KeyValuePair<string, object>> profileVariables = new List<KeyValuePair<string, object>>(); profileVariables.Add(new KeyValuePair<string, object>("$feature", feature)); ArcadeEvaluationResult result = await ArcadeEvaluator.EvaluateAsync(profileVariables); Dictionary<string, object> retValues = JObject.FromObject(result.Result).ToObject<Dictionary<string, object>>(); if (retValues != null) { foreach (KeyValuePair<string, object> pair in retValues) feature.SetAttributeValue(pair.Key, pair.Value); } }

Thanks.

Re: Arcade - 'System.InvalidCastException'

KristianEkenes — Wed, 31 Aug 2022 16:17:05 GMT

It looks like this is posted in the wrong community since this is a Runtime snippet and not a JavaScript one. I suggest posting in one of these: https://community.esri.com/t5/arcgis-runtime-sdks/ct-p/arcgis-runtime-sdks

topic Arcade - 'System.InvalidCastException' in ArcGIS JavaScript Maps SDK Questions

Arcade - 'System.InvalidCastException'

Re: Arcade - 'System.InvalidCastException'