AnsweredAssumed Answered

Running Tool AddField with the SDK never ends?

Question asked by htudosieesri-ca-esridist Employee on Jun 17, 2016
Latest reply on Jun 20, 2016 by htudosieesri-ca-esridist

I'm executing this code:

private Task ExecuteAddFieldTool(string fieldName, string fieldAlias, string fieldType, int? fieldLength=null, bool isNullable=true)
            var inTable = DeltaLayer.Name;
            var workspaceName = ((IInternalMapMember) DeltaLayer).WorkspaceName;
            var parameters = Geoprocessing.MakeValueArray(inTable, fieldName, fieldType.ToUpper(), null, null,
                fieldLength, fieldAlias, isNullable ? "NULABLE" : "NON_NULLABLE");
            var env = Geoprocessing.MakeEnvironmentArray(workspace: workspaceName);
            var cts = new System.Threading.CancellationTokenSource();
            var results =  Geoprocessing.ExecuteToolAsync("management.AddField", 
                parameters, env, cts.Token, (eventName, o) =>  
                    switch (eventName)
                        case "OnValidate": 
                            if (((IGPMessage[]) o).Any(it => it.Type == GPMessageType.Warning))
                                MessageBox.Show($"{eventName}: {o}");
                        case "OnMessage":
                        case "OnProgressMessage":
                            MessageBox.Show($"{eventName}: {o}");
                            //if ((string)o == "Updating...") ...
                        case "OnProgressPos":
                            MessageBox.Show($"{eventName}: {o} %");
            return results;


The code execute fine, and the field is created, but after the last message shown - "Updating..." the UI freezes and have to crash ArcGis Pro from Task Manager.

I can see the field created only after restarting the project in ArcGis Pro.

I have tries all kind of variation on QueuedTask, Task, Task Factory, async and await with no success!