ArcGIS Pro IObjectCopy or Similar

[AbelPerez]

In the ArcGIS 10 SDK I copied an object by value using the IObjectCopy interface. I can't find a similar thing in the ArcGIS Desktop SDK. I guess its available in the Enterprise SDK but that's not what i am working with. So, what would be equivalent code in Pro if I had this in ArcGIS 10?

'deep clone the IFeatureSelection because it's possible that the Origin and Proximity sources are the same.
Dim objectCopyB As IObjectCopy = New ObjectCopy
Dim objB As Object = objectCopyB.Copy(pFeatSelOriginB)
Dim pFeatSelOrigCloneB As IFeatureSelection = CType(objB, IFeatureSelection)

[GKmieliauskas]

Hi,

You can use EditOperation Copy method. Below is code for map selection copy layer by layer:

			var mv = MapView.Active;

			return QueuedTask.Run(() =>
			{

				var sel_set = mv.Map.GetSelection().ToDictionary();
				if (sel_set.Count() == 0)
					return false;

				//do the copy
				var editOp = new EditOperation()
				{
					Name = "Copy",
					ErrorMessage = "Copy failed"
				};

				foreach (var kvp in sel_set)
				{
					editOp.Copy(kvp.Key, kvp.Key, kvp.Value);
                }
				return editOp.Execute();
			});

[AbelPerez]

ok let me give that a try.

[AbelPerez]

I'm not sure this is the routine that will give me what i need. I need to clone a feature layer so that I can manipulate it before sending it to a GP. Essentially I want to use a temp layer that is  not to be added to the map.

In ArcGIS 10 I did this and it worked great:

If pOriginalFeatLayer Is Nothing Then Throw New ArgumentNullException(NameOf(pOriginalFeatLayer))

'get the feature class (Or feature table) from original layer
Dim pFeatClass As IFeatureClass = pOriginalFeatLayer.FeatureClass

'create a New FeatureLayer using the same feature class/table (this creates a layer pointing to the same data)
Dim pCloneFeatLayer As IFeatureLayer = New FeatureLayer With {.FeatureClass = pFeatClass}

'copy basic properties
pCloneFeatLayer.Name = pOriginalFeatLayer.Name + "_Cloned" 'new name

It's just a layer in memory that is for temporay6 work and therefore not needed to be in the map.

[GKmieliauskas]

There is no possibility to have map layer not added to map. You can use Copy Features GP tool and as an output use memory workspace

            //get the active map
            MapView activeView = MapView.Active;
            //get the first layer in the active map
            var layer = activeView.Map.GetLayersAsFlattenedList().OfType<FeatureLayer>().First();
            if(layer == null)
                return; 

            var parameters = Geoprocessing.MakeValueArray(layer, @"memory\clonedFC");

            IGPResult result = await Geoprocessing.ExecuteToolAsync("CopyFeatures_management", parameters, null, null, null, GPExecuteToolFlags.AddToHistory);

[AbelPerez]

What about creating a map in memory and adding the layer to that? 

[GKmieliauskas]

Sorry, I can't help you to create a map in memory.

[AbelPerez]

Ok here is what i have an it seems to work without exceptions. I haven't tried sending this to my GP so that's the second part of the challenge.

// do the basic clone of the layer
Map map = null;
FeatureLayer cloneFeatLayer = null;
await QueuedTask.Run(() =>
{
    // we create the layer and do not display in the active map but instead we will
    // create a map in memory and add the layer to this temporary map.
    map = MapFactory.Instance.CreateMap("ForCloneLayer", MapType.Map);

    // get the URI of the original layer
    Uri uri = originalFeatLayer.GetPath();
    Debug.Print($"uri=[{uri}]");

    // create feature layer creation parameters. for this routine we will only need the basics.
    var flyrCreatnParam = new FeatureLayerCreationParams(uri)
    {
        Name = originalFeatLayer.Name + "_Cloned",
        IsVisible = false,
        DefinitionQuery = null,
        //MinimumScale = 1000000,
        //MaximumScale = 5000,
        //DefinitionQuery = new DefinitionQuery(whereClause: "Population > 100000", name: "More than 100k"),
        //RendererDefinition = new SimpleRendererDefinition()
        //{
        //    SymbolTemplate = SymbolFactory.Instance.ConstructPointSymbol(CIMColor.CreateRGBColor(255, 0, 0), 8, SimpleMarkerStyle.Hexagon).MakeSymbolReference()
        //}
    };

    cloneFeatLayer = LayerFactory.Instance.CreateLayer<FeatureLayer>(flyrCreatnParam, map);
});

Then calling it like so

// test the cloning
FeatureLayer originCloneLayer = await lyrOrigin.GetBasicClone();

originCloneLayer = null;

// just for testing
GC.Collect();
GC.WaitForPendingFinalizers();