About the Network Analyst Engine application Sample
[C#]
cmdRemoveLayer.cs
using System.Windows.Forms; using System.Runtime.InteropServices; using ESRI.ArcGIS.ADF.BaseClasses; using ESRI.ArcGIS.Carto; using ESRI.ArcGIS.Controls; // This command removes the selected layer from the map namespace NAEngine { [Guid("53399A29-2B65-48d5-930F-804B88B85A34")] [ClassInterface(ClassInterfaceType.None)] [ProgId("NAEngine.RemoveLayer")] public sealed class cmdRemoveLayer : BaseCommand { private IMapControl3 m_mapControl; public cmdRemoveLayer() { base.m_caption = "Remove Layer"; } public override void OnClick() { // Get the NALayer that was right-clicked on in the table of contents // m_MapControl.CustomProperty was set in frmMain.axTOCControl1_OnMouseDown ILayer layer = (ILayer)m_mapControl.CustomProperty; m_mapControl.Map.DeleteLayer(layer); m_mapControl.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGeography, null, layer.AreaOfInterest); } public override void OnCreate(object hook) { m_mapControl = (IMapControl3)hook; } } }
[Visual Basic .NET]
cmdRemoveLayer.vb
Imports Microsoft.VisualBasic Imports System.Windows.Forms Imports System.Runtime.InteropServices Imports ESRI.ArcGIS.ADF.BaseClasses Imports ESRI.ArcGIS.Carto Imports ESRI.ArcGIS.Controls ' This command removes the selected layer from the map Namespace NAEngine <Guid("E9376DA6-E403-46c7-86B5-6A4A6C818BA0"), ClassInterface(ClassInterfaceType.None), ProgId("NAEngine.RemoveLayer")> _ Public NotInheritable Class RemoveLayer : Inherits BaseCommand Private m_mapControl As IMapControl3 Public Sub New() MyBase.m_caption = "Remove Layer" End Sub Public Overloads Overrides Sub OnClick() ' Get the NALayer that was right-clicked on in the table of contents ' m_MapControl.CustomProperty was set in frmMain.axTOCControl1_OnMouseDown Dim layer As ILayer = CType(m_mapControl.CustomProperty, ILayer) m_mapControl.Map.DeleteLayer(layer) m_mapControl.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGeography, Nothing, layer.AreaOfInterest) End Sub Public Overloads Overrides Sub OnCreate(ByVal hook As Object) m_mapControl = CType(hook, IMapControl3) End Sub End Class End Namespace