' Copyright 2012 ESRI
' 
' All rights reserved under the copyright laws of the United States
' and applicable international laws, treaties, and conventions.
' 
' You may freely redistribute and use this sample code, with or
' without modification, provided you include the original copyright
' notice and use restrictions.
' 
' See the use restrictions.
' 

Imports Microsoft.VisualBasic
Imports System.Runtime.InteropServices
Imports System.Windows.Forms
Imports ESRI.ArcGIS.Carto

' This command removes the selected layer from the map
Namespace NAEngine
  <Guid("53399A29-2B65-48d5-930F-804B88B85A34"), ClassInterface(ClassInterfaceType.None), ProgId("NAEngine.RemoveLayer")> _
  Public NotInheritable Class cmdRemoveLayer : Inherits ESRI.ArcGIS.ADF.BaseClasses.BaseCommand
    Private m_mapControl As ESRI.ArcGIS.Controls.IMapControl3

    Public Sub New()
      MyBase.m_caption = "Remove Layer"
    End Sub

    Public Overrides Sub OnClick()
      If m_mapControl Is Nothing Then
        MessageBox.Show("Error: Map control is null for this command")
        Return
      End If

      ' Get the layer that was right-clicked on in the table of contents
      ' m_MapControl.CustomProperty was set in frmMain.axTOCControl1_OnMouseDown
            Dim layer As ILayer = TryCast(m_mapControl.CustomProperty, ILayer)
      If layer Is Nothing Then
        MessageBox.Show("Error: The selected layer was not set as the CustomProperty of the map control")
        Return
      End If

      ' Remove the selected layer, then redraw the map
      m_mapControl.Map.DeleteLayer(layer)
      m_mapControl.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGeography, Nothing, layer.AreaOfInterest)
    End Sub

    Public Overrides Sub OnCreate(ByVal hook As Object)
      ' The "hook" was set as a MapControl in formMain_Load
      m_mapControl = TryCast(hook, ESRI.ArcGIS.Controls.IMapControl3)
    End Sub
  End Class
End Namespace