CreateFeatureLayer(Uri,ILayerContainerEdit,LayerPosition,String,RendererDefinition) Method

Creates a new Feature Layer instance with the specified path to a dataset and adds it to a container such as a map or a group layer. Optionally you can provide a name and rendererDefinition to override the default display name and renderer respectively. This method must be called on the MCT. Use QueuedTask.Run.

Syntax

C#
Visual Basic (Declaration)

public FeatureLayer CreateFeatureLayer( 
   Uri dataUri,
   ILayerContainerEdit mapOrGroupLayer,
   LayerPosition position,
   string layerName,
   RendererDefinition rendererDefinition
)

Public Overloads Function CreateFeatureLayer( _
   ByVal dataUri As Uri, _
   ByVal mapOrGroupLayer As ILayerContainerEdit, _
   Optional ByVal position As LayerPosition, _
   Optional ByVal layerName As String, _
   Optional ByVal rendererDefinition As RendererDefinition _
) As FeatureLayer

Parameters

dataUri: An URI represents the path or url to a dataset or .lyrx or .lpkx file.
mapOrGroupLayer: A map or group layer instance to which the Feature Layer will be added
position: LayerPosition specifies whether the Feature Layer should be auto positioned or be on the top or at the bottom
layerName: (optional) When it is not provided, the default display name gets used e.g. the dataset name or alias. (default value = "")
rendererDefinition: (optional) Provide a RendererDefinition to create a FeatureLayer with your custom renderer instead of the default renderer that gets generated automatically. (default value = null)

Return Value

FeatureLayer

Exceptions

Exception	Description
ArcGIS.Core.CalledOnWrongThreadException	This method or property must be called within the lambda passed to QueuedTask.Run.

Remarks

Some sample paths to:

A FeatureClass in a FileGeodatabase	C:\Data\MyFileGDB.gdb\Census
A FeatureClass from a SDE	C:\Connections\MySDEConnection.sde\Roads
A shape file in a folder	\\Machine\SharedFolder\MySpatialData.dbf
A .lyrx or .lpkx file	\\Machine\SharedFolder\Fires.lyrx
A feature layer off a map or feature service	http://sampleserver6.arcgisonline.com/arcgis/rest/services/NapervilleShelters/MapServer/0

Example

FeatureLayer flyr = LayerFactory.Instance.CreateFeatureLayer(new Uri(@"C:\Data\Census.gdb\States"), MapView.Active.Map);

Create a feature layer with class breaks renderer with defaults.

await QueuedTask.Run(() =>
  LayerFactory.Instance.CreateFeatureLayer(
    new Uri(@"c:\data\countydata.gdb\counties"),
    MapView.Active.Map,
    layerName: "Population Density (sq mi) Year 2010",
    rendererDefinition: new GraduatedColorsRendererDefinition("POP10_SQMI")
  )
);

Create a feature layer with class breaks renderer.

string colorBrewerSchemesName = "ColorBrewer Schemes (RGB)";
StyleProjectItem style = Project.Current.GetItems<StyleProjectItem>().First(s => s.Name == colorBrewerSchemesName);
string colorRampName = "Greens (Continuous)";
IList<ColorRampStyleItem> colorRampList = await QueuedTask.Run(() =>
{
  return style.SearchColorRamps(colorRampName);
});
ColorRampStyleItem colorRamp = colorRampList[0];

await QueuedTask.Run(() =>
{
  GraduatedColorsRendererDefinition gcDef = new GraduatedColorsRendererDefinition()
  {
    ClassificationField = "CROP_ACR07",
    ClassificationMethod = ArcGIS.Core.CIM.ClassificationMethod.NaturalBreaks,
    BreakCount = 6,
    ColorRamp = colorRamp.ColorRamp,
    SymbolTemplate = SymbolFactory.Instance.ConstructPolygonSymbol(
                            ColorFactory.Instance.GreenRGB, SimpleFillStyle.Solid, null).MakeSymbolReference(),
    ExclusionClause = "CROP_ACR07 = -99",
    ExclusionSymbol = SymbolFactory.Instance.ConstructPolygonSymbol(
                            ColorFactory.Instance.RedRGB, SimpleFillStyle.Solid, null).MakeSymbolReference(),
    ExclusionLabel = "No yield",
  };

  LayerFactory.Instance.CreateFeatureLayer(new Uri(@"c:\Data\CountyData.gdb\Counties"),
            MapView.Active.Map, layerName: "Crop", rendererDefinition: gcDef);
});

Requirements

Target Platforms: Windows 10, Windows 8.1

Reference

LayerFactory Class
LayerFactory Members
Overload List