ArcGIS Pro 3.0 API Reference Guide
ArcGIS.Core.CIM Namespace / CIMLayerDocument Class / LayerDefinitions Property

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    LayerDefinitions Property (CIMLayerDocument)
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    Gets or sets the layer definitions in the layer document.
    public CIMDefinition[] LayerDefinitions {get; set;}
    Public Property LayerDefinitions As CIMDefinition()
    Create layer from a lyrx file
    var lyrDocFromLyrxFile = new LayerDocument(@"d:\data\cities.lyrx");
    var cimLyrDoc = lyrDocFromLyrxFile.GetCIMLayerDocument();
    //modifying its renderer symbol to red
    var r = ((CIMFeatureLayer)cimLyrDoc.LayerDefinitions[0]).Renderer as CIMSimpleRenderer;
    r.Symbol.Symbol.SetColor(new CIMRGBColor() { R = 255 });
    //optionally save the updates out as a file
    //get a json representation of the layer document and you want store away...
    var aJSONString = lyrDocFromLyrxFile.AsJson();
    //... and load it back when needed
    cimLyrDoc = lyrDocFromLyrxFile.GetCIMLayerDocument();
    //create a layer and add it to a map
    var lcp = new LayerCreationParams(cimLyrDoc);
    var lyr = LayerFactory.Instance.CreateLayer<FeatureLayer>(lcp, map);
    Apply Symbology to a layer from a Layer file
    //Note: Run within QueuedTask.Run
    //Get the Layer Document from the lyrx file
    var lyrDocFromLyrxFile = new LayerDocument(layerFile);
    var cimLyrDoc = lyrDocFromLyrxFile.GetCIMLayerDocument();
    //Get the renderer from the layer file
    var rendererFromLayerFile = ((CIMFeatureLayer)cimLyrDoc.LayerDefinitions[0]).Renderer as CIMUniqueValueRenderer;
    //Apply the renderer to the feature layer
    //Note: If working with a raster layer, use the SetColorizer method.

    Target Platforms: Windows 11, Windows 10, Windows 8.1

    See Also