topic Re: C# Code for ArcGIS Pro Add-in to retrieve text string from selected record of a layer in ArcGIS Pro SDK Questions

C# Code for ArcGIS Pro Add-in to retrieve text string from selected record of a layer

JohnHanson1 — Tue, 30 Nov 2021 01:40:30 GMT

Learning C# and I am looking for some code that will allow me to create a tool for the Map View, that when positioned over an individual polygon and selected by the tool, would return the text string (e.g. CntyGeo.lyrx) from the attribute field (say "Link") of the selected feature layer in the Contents Pane.
I would use this returned individual text string to reference to another C# code that adds a .lyrx file to the Map View (see C# code below). The text string would be used to add an .lyrx from the C:\ drive (e.g. CntyGeo.lyrx) to the Map View which currently works:
protected override void OnClick()
{
try { QueuedTask.Run(() => { Uri myUri = new Uri(@"C:\Temp\CntyGeo.lyrx"); Layer newlayer = LayerFactory.Instance.CreateFeatureLayer(myUri, MapView.Active.Map, LayerPosition.AddToTop); }); }
catch (Exception ex)
{
MessageBox.Show($@"Error: {ex.ToString()}");
}
I'm using ArcGIS Pro 2.8 and MS Visual Studio 2019. Thanks for any help.

Regards,

John

Re: C# Code for ArcGIS Pro Add-in to retrieve text string from selected record of a layer

KirkKuykendall1 — Tue, 07 Dec 2021 15:35:30 GMT

Something like this might work.

Right click on project and Add>New Item then choose Pro Map Tool.

In the daml, change the condition:

Change the OnSketchCompleteAsync override:

using ArcGIS.Core.CIM; using ArcGIS.Core.Data; using ArcGIS.Core.Geometry; using ArcGIS.Desktop.Editing; using ArcGIS.Desktop.Framework.Threading.Tasks; using ArcGIS.Desktop.Mapping; using System; using System.Diagnostics; using System.Linq; using System.Threading.Tasks; namespace ToolTester { internal class MapTool1 : MapTool { public MapTool1() { IsSketchTool = true; SketchType = SketchGeometryType.Point; SketchOutputMode = SketchOutputMode.Map; } protected override Task OnToolActivateAsync(bool active) { return base.OnToolActivateAsync(active); } protected override Task<bool> OnSketchCompleteAsync(Geometry geometry) { return QueuedTask.Run(() => { var fLayer = this.ActiveMapView.GetSelectedLayers().FirstOrDefault() as FeatureLayer; //condition="esri_mapping_featureLayerSelectedCondition" in the daml should prevent this ... if (fLayer == null) return true; //use whatever field is been set as Display Field in the layer properties ... var fldName = ((CIMFeatureLayer)fLayer.GetDefinition()).FeatureTable.DisplayField; string fileName = GetFirstRow(fLayer, fldName, geometry); if (!string.IsNullOrWhiteSpace(fileName)) { Uri myUri = new Uri($@"C:\Temp\{fileName}.lyrx"); Debug.Print(fileName); //todo: verify file exists, layer not already added, etc. //Layer newlayer = LayerFactory.Instance.CreateFeatureLayer(myUri, this.ActiveMapView.Map, LayerPosition.AddToTop); } return true; }); } private string GetFirstRow(FeatureLayer fLayer, string fldName, Geometry geom) { string s = ""; GeometryEngine.Instance.Project(geom, fLayer.GetSpatialReference()); using (var cursor = fLayer.Search(new SpatialQueryFilter() { FilterGeometry = GeometryEngine.Instance.Project(geom, fLayer.GetSpatialReference()), SpatialRelationship = SpatialRelationship.Intersects, SubFields = fldName })) { if (cursor.MoveNext()) s = cursor.Current[fldName].ToString(); }; return s; } } }

Re: C# Code for ArcGIS Pro Add-in to retrieve text string from selected record of a layer

JohnHanson1 — Wed, 08 Dec 2021 17:28:42 GMT

Mr. Kuykendall,

Perfect! Thank you very much! I had added some C# code to add layers from a selection, and it works like a charm. I attached the modified code of the MapTool1.cs (zipped) below.

Once again, Thank you

John Hanson