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This document is archived and information here might be outdated. Recommended version. |
ILayerDescription.SelectionSymbol Property (ArcObjects .NET 10.8 SDK)
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This document is archived and information here might be outdated. Recommended version. |
The selection symbol.
[Visual Basic .NET] Public Property SelectionSymbol As ISymbol
[C#] public ISymbol SelectionSymbol {get; set;}
[C++]
HRESULT get_SelectionSymbol(
ISymbol** Symbol
);
[C++]
HRESULT putref_SelectionSymbol(
ISymbol* Symbol
);
[C++] Parameters Symbol [out, retval]
Symbol is a parameter of type ISymbol** Symbol [in]
Symbol is a parameter of type ISymbol*
Use this property when you want something other than the default symbology to indicate selected features. For example, you want to use a star symbol to indicate selected point features. SelectionSymbol is only applied if SetSelectionSymbol is set to TRUE. Otherwise, default symbols are used.
The following sample code shows how to change the symbol of of a point layer's selected feature to a red diamond. It assumes that you already have a valid MapServer and MapDescription object.
IMapServer mapServer;
IMapDescription mapDesc;
int layerID = 0;
string strMapName = mapDesc.Name;
// Select a feature
IQueryFilter filter = new QueryFilterClass();
filter.WhereClause = "Name = 'Halifax'";
IFIDSet FIDSet = mapServer.QueryFeatureIDs(strMapName, layerID, filter);
// Set color
IRgbColor color = new RgbColorClass();
color.Red = 255;
// Create new marker symbol
ISimpleMarkerSymbol markerSymbol = new SimpleMarkerSymbolClass();
markerSymbol.Size = 15;
markerSymbol.Color = color;
markerSymbol.Style = esriSimpleMarkerStyle.esriSMSDiamond;
// Hilite selected feature
ILayerDescription layerDesc = mapDesc.LayerDescriptions.get_Element(layerID);
layerDesc.SelectionFeatures = FIDSet;
layerDesc.SetSelectionSymbol = true;
layerDesc.SelectionSymbol = (ISymbol)markerSymbol;