IMapLayerInfo Interface

Provides access to the available properties of a map layer info object.

When To Use

Members

	Name	Description
	CanFind	Indicates if the layer supports the Find operation.
	CanIdentify	Indicates if the layer supports the Identify operation.
	CanScaleSymbols	Indicates if the layer supports symbol scaling.
	CanSelect	Indicates if the layer supports feature selection.
	Description	The description of the layer. This property is set in the General tab of the Layer Properties dialog.
	DisplayField	Primary display field.
	Extent	The geographic extent of the layer.
	FieldAliases	Array of strings that contains field alias for each field in Fields property.
	Fields	Array of attribute fields contained in the layer.
	HasAttributes	Indicates if the layer has attributes.
	HasHyperlinks	Indicates if the layer has hyperlinks.
	HasLabels	Indicates if the layer has labels to turn on and off.
	ID	The layer identifier. This ID is used throughout to uniquely identify the layer for all requests.
	IsComposite	Indicates if the layer is a composite layer.
	IsFeatureLayer	Indicates if the layer is a feature layer.
	MaxScale	The maximum visible scale for the layer.
	MinScale	The minimum visible scale for the layer.
	Name	The name of the layer.
	ParentLayerID	If the layer is a member of a composite layer, this property identifies the parent layer.
	SourceDescription	The description of the source information for the layer.
	SubLayers	The list identifying the sublayers if the layer is a composite layer.
	Type	The layer type.

IMapLayerInfo.CanFind Property

Indicates if the layer supports the Find operation.

Public ReadOnly Property CanFind As Boolean

public bool CanFind {get;}

IMapLayerInfo.CanIdentify Property

Indicates if the layer supports the Identify operation.

Public ReadOnly Property CanIdentify As Boolean

public bool CanIdentify {get;}

IMapLayerInfo.CanScaleSymbols Property

Indicates if the layer supports symbol scaling.

Public ReadOnly Property CanScaleSymbols As Boolean

public bool CanScaleSymbols {get;}

IMapLayerInfo.CanSelect Property

Indicates if the layer supports feature selection.

Public ReadOnly Property CanSelect As Boolean

public bool CanSelect {get;}

IMapLayerInfo.Description Property

The description of the layer. This property is set in the General tab of the Layer Properties dialog.

Public ReadOnly Property Description As String

public string Description {get;}

IMapLayerInfo.DisplayField Property

Primary display field.

Public ReadOnly Property DisplayField As String

public string DisplayField {get;}

IMapLayerInfo.Extent Property

The geographic extent of the layer.

Public ReadOnly Property Extent As IEnvelope

public IEnvelope Extent {get;}

IMapLayerInfo.FieldAliases Property

Array of strings that contains field alias for each field in Fields property.

Public ReadOnly Property FieldAliases As IStringArray

public IStringArray FieldAliases {get;}

IMapLayerInfo.Fields Property

Array of attribute fields contained in the layer.

Public ReadOnly Property Fields As IFields

public IFields Fields {get;}

IMapLayerInfo.HasAttributes Property

Indicates if the layer has attributes.

Public ReadOnly Property HasAttributes As Boolean

public bool HasAttributes {get;}

IMapLayerInfo.HasHyperlinks Property

Indicates if the layer has hyperlinks.

Public ReadOnly Property HasHyperlinks As Boolean

public bool HasHyperlinks {get;}

IMapLayerInfo.HasLabels Property

Indicates if the layer has labels to turn on and off.

Public ReadOnly Property HasLabels As Boolean

public bool HasLabels {get;}

IMapLayerInfo.ID Property

The layer identifier. This ID is used throughout to uniquely identify the layer for all requests.

Public ReadOnly Property ID As Integer

public int ID {get;}

Remarks

ID is a unique identifier for a layer in a given instance of ArcGIS for Server map service. It is important to note that ID, SourceID and the index of layers (see MapLayerInfos) in map document are not the same. SourceID is used for map service interaction with the GPServer.

When a map service is published, a unique ID is assigned to all layers within the original map document (.mxd) starting from 0 (zero). This ID is accessible from IMapServerObjects2, MapLayerInfo, LayerDescription, MapServerLegendInfo, MapServerIdentifyResult, MapServerFindResult and FeatureExtent.

ID is not re-usable and does not change if the order of the layer is changed. This would change the how each layer is ordered in the index of layers. Adding new a layer results in a new ID being assigned. IDs keep incrementing as new layers are added to the map service. The limit of id numbers available is the limit of Long data type.

Please note that if the layer order in the TOC of the original map is changed or if layers are added/removed, the IDs will change accordingly.

IMapLayerInfo.IsComposite Property

Indicates if the layer is a composite layer.

Public ReadOnly Property IsComposite As Boolean

public bool IsComposite {get;}

IMapLayerInfo.IsFeatureLayer Property

Indicates if the layer is a feature layer.

Public ReadOnly Property IsFeatureLayer As Boolean

public bool IsFeatureLayer {get;}

IMapLayerInfo.MaxScale Property

The maximum visible scale for the layer.

Public ReadOnly Property MaxScale As Double

public double MaxScale {get;}

IMapLayerInfo.MinScale Property

The minimum visible scale for the layer.

Public ReadOnly Property MinScale As Double

public double MinScale {get;}

IMapLayerInfo.Name Property

The name of the layer.

Public ReadOnly Property Name As String

public string Name {get;}

IMapLayerInfo.ParentLayerID Property

If the layer is a member of a composite layer, this property identifies the parent layer.

Public ReadOnly Property ParentLayerID As Integer

public int ParentLayerID {get;}

IMapLayerInfo.SourceDescription Property

The description of the source information for the layer.

Public ReadOnly Property SourceDescription As String

public string SourceDescription {get;}

Remarks

_With ArcGIS Server 9.3 release, this property is deprecated and always returns empty string._

IMapLayerInfo.SubLayers Property

The list identifying the sublayers if the layer is a composite layer.

Public ReadOnly Property SubLayers As ILongArray

public ILongArray SubLayers {get;}

IMapLayerInfo.Type Property

The layer type.

Public ReadOnly Property Type As String

public string Type {get;}

Classes that implement IMapLayerInfo

Classes	Description
MapLayerInfo	The Map Layer Info coclass provides read-only information about a layer in a map.

private IMapLayerInfo GetUNLayerInfo(IMapServer mapService)

{

  IMapServerInfo mapServerInfo = mapService.GetServerInfo(mapService.DefaultMapName);

  IMapLayerInfos layerInfos = mapServerInfo.MapLayerInfos;



  for (int i = 0; i < layerInfos.Count; i++)

  {

    IMapLayerInfo layerInfo = layerInfos.Element[i];

    if (layerInfo.Type.Equals("Utility Network Layer", StringComparison.OrdinalIgnoreCase))

    {

      return layerInfo;

    }

  }

  return null;

}