RemoveLayerCmd

RemoveLayerCmd.cs

using System;
using System.Drawing;
using System.Runtime.InteropServices;
using ESRI.ArcGIS.ADF.BaseClasses;
using ESRI.ArcGIS.ADF.CATIDs;
using ESRI.ArcGIS.Controls;
using ESRI.ArcGIS.Carto;

namespace MapControlSaveLayerFile
{
  /// <summary>
  /// Summary description for RemoveLayerCmd.
  /// </summary>
  [Guid("d848a775-dc85-4ee3-88a6-a780572139a2")]
  [ClassInterface(ClassInterfaceType.None)]
  [ProgId("MapControlSaveLayerFile.RemoveLayerCmd")]
  public sealed class RemoveLayerCmd : BaseCommand
  {
    #region COM Registration Function(s)
    [ComRegisterFunction()]
    [ComVisible(false)]
    static void RegisterFunction(Type registerType)
    {
      // Required for ArcGIS Component Category Registrar support
      ArcGISCategoryRegistration(registerType);

      //
      // TODO: Add any COM registration code here
      //
    }

    [ComUnregisterFunction()]
    [ComVisible(false)]
    static void UnregisterFunction(Type registerType)
    {
      // Required for ArcGIS Component Category Registrar support
      ArcGISCategoryUnregistration(registerType);

      //
      // TODO: Add any COM unregistration code here
      //
    }

    #region ArcGIS Component Category Registrar generated code
    /// <summary>
    /// Required method for ArcGIS Component Category registration -
    /// Do not modify the contents of this method with the code editor.
    /// </summary>
    private static void ArcGISCategoryRegistration(Type registerType)
    {
      string regKey = string.Format("HKEY_CLASSES_ROOT\\CLSID\\{{{0}}}", registerType.GUID);
      ControlsCommands.Register(regKey);

    }
    /// <summary>
    /// Required method for ArcGIS Component Category unregistration -
    /// Do not modify the contents of this method with the code editor.
    /// </summary>
    private static void ArcGISCategoryUnregistration(Type registerType)
    {
      string regKey = string.Format("HKEY_CLASSES_ROOT\\CLSID\\{{{0}}}", registerType.GUID);
      ControlsCommands.Unregister(regKey);

    }

    #endregion
    #endregion

    private IHookHelper m_hookHelper;

    public RemoveLayerCmd()
    {
      base.m_category = ".NET Samples";
      base.m_caption = "Remove Layer";
      base.m_message = "Remove Layer";
      base.m_toolTip = "Remove Layer";
      base.m_name = "MapControlSaveLayerFile_RemoveLayerCmd";   

      try
      {
        //
        // TODO: change bitmap name if necessary
        //
        string bitmapResourceName = GetType().Name + ".bmp";
        base.m_bitmap = new Bitmap(GetType(), bitmapResourceName);
      }
      catch (Exception ex)
      {
        System.Diagnostics.Trace.WriteLine(ex.Message, "Invalid Bitmap");
      }
    }

    #region Overriden Class Methods

    /// <summary>
    /// Occurs when this command is created
    /// </summary>
    /// <param name="hook">Instance of the application</param>
    public override void OnCreate(object hook)
    {
      if (hook == null)
        return;

      if (m_hookHelper == null)
        m_hookHelper = new HookHelperClass();

      m_hookHelper.Hook = hook;

      // TODO:  Add other initialization code
    }

    /// <summary>
    /// Occurs when this command is clicked
    /// </summary>
    public override void OnClick()
    {
      //need to get the layer from the custom-property of the map
      if (null == m_hookHelper)
        return;

      //get the mapControl hook
      object hook = null;
      if (m_hookHelper.Hook is IToolbarControl2)
      {
        hook = ((IToolbarControl2)m_hookHelper.Hook).Buddy;
      }
      else
      {
        hook = m_hookHelper.Hook;
      }

      //get the custom property from which is supposed to be the layer to be saved
      object customProperty = null;
      IMapControl3 mapControl = null;
      if (hook is IMapControl3)
      {
        mapControl = (IMapControl3)hook;
        customProperty = mapControl.CustomProperty;
      }
      else
        return;

      if (null == customProperty || !(customProperty is ILayer))
        return;

      m_hookHelper.FocusMap.DeleteLayer((ILayer)customProperty);
    }

    #endregion
  }
}

RemoveLayerCmd.vb

Imports Microsoft.VisualBasic
Imports System
Imports System.Drawing
Imports System.Runtime.InteropServices
Imports ESRI.ArcGIS.ADF.BaseClasses
Imports ESRI.ArcGIS.ADF.CATIDs
Imports ESRI.ArcGIS.Controls
Imports ESRI.ArcGIS.Carto

  ''' <summary>
  ''' Summary description for RemoveLayerCmd.
  ''' </summary>
  <Guid("d848a775-dc85-4ee3-88a6-a780572139a2"), ClassInterface(ClassInterfaceType.None), ProgId("MapControlSaveLayerFile.RemoveLayerCmd")> _
  Public NotInheritable Class RemoveLayerCmd : Inherits BaseCommand
	#Region "COM Registration Function(s)"
	<ComRegisterFunction(), ComVisible(False)> _
	Private Shared Sub RegisterFunction(ByVal registerType As Type)
	  ' Required for ArcGIS Component Category Registrar support
	  ArcGISCategoryRegistration(registerType)

	  '
	  ' TODO: Add any COM registration code here
	  '
	End Sub

	<ComUnregisterFunction(), ComVisible(False)> _
	Private Shared Sub UnregisterFunction(ByVal registerType As Type)
	  ' Required for ArcGIS Component Category Registrar support
	  ArcGISCategoryUnregistration(registerType)

	  '
	  ' TODO: Add any COM unregistration code here
	  '
	End Sub

	#Region "ArcGIS Component Category Registrar generated code"
	''' <summary>
	''' Required method for ArcGIS Component Category registration -
	''' Do not modify the contents of this method with the code editor.
	''' </summary>
	Private Shared Sub ArcGISCategoryRegistration(ByVal registerType As Type)
	  Dim regKey As String = String.Format("HKEY_CLASSES_ROOT\CLSID\{{{0}}}", registerType.GUID)
	  ControlsCommands.Register(regKey)

	End Sub
	''' <summary>
	''' Required method for ArcGIS Component Category unregistration -
	''' Do not modify the contents of this method with the code editor.
	''' </summary>
	Private Shared Sub ArcGISCategoryUnregistration(ByVal registerType As Type)
	  Dim regKey As String = String.Format("HKEY_CLASSES_ROOT\CLSID\{{{0}}}", registerType.GUID)
	  ControlsCommands.Unregister(regKey)

	End Sub

	#End Region
	#End Region

	Private m_hookHelper As IHookHelper

	Public Sub New()
	  MyBase.m_category = ".NET Samples"
	  MyBase.m_caption = "Remove Layer"
	  MyBase.m_message = "Remove Layer"
	  MyBase.m_toolTip = "Remove Layer"
	  MyBase.m_name = "MapControlSaveLayerFile_RemoveLayerCmd"

	  Try
		'
		' TODO: change bitmap name if necessary
		'
		Dim bitmapResourceName As String = Me.GetType().Name & ".bmp"
		MyBase.m_bitmap = New Bitmap(Me.GetType(), bitmapResourceName)
	  Catch ex As Exception
		System.Diagnostics.Trace.WriteLine(ex.Message, "Invalid Bitmap")
	  End Try
	End Sub

#Region "Overridden Class Methods"

    ''' <summary>
    ''' Occurs when this command is created
    ''' </summary>
    ''' <param name="hook">Instance of the application</param>
    Public Overrides Sub OnCreate(ByVal hook As Object)
        If hook Is Nothing Then
            Return
        End If

        If m_hookHelper Is Nothing Then
            m_hookHelper = New HookHelperClass()
        End If

        m_hookHelper.Hook = hook

        ' TODO:  Add other initialization code
    End Sub

    ''' <summary>
    ''' Occurs when this command is clicked
    ''' </summary>
    Public Overrides Sub OnClick()
        'need to get the layer from the custom-property of the map
        If Nothing Is m_hookHelper Then
            Return
        End If

        'get the mapControl hook
        Dim hook As Object = Nothing
        If TypeOf m_hookHelper.Hook Is IToolbarControl2 Then
            hook = (CType(m_hookHelper.Hook, IToolbarControl2)).Buddy
        Else
            hook = m_hookHelper.Hook
        End If

        'get the custom property from which is supposed to be the layer to be saved
        Dim customProperty As Object = Nothing
        Dim mapControl As IMapControl3 = Nothing
        If TypeOf hook Is IMapControl3 Then
            mapControl = CType(hook, IMapControl3)
            customProperty = mapControl.CustomProperty
        Else
            Return
        End If

        If Nothing Is customProperty OrElse Not (TypeOf customProperty Is ILayer) Then
            Return
        End If

        m_hookHelper.FocusMap.DeleteLayer(CType(customProperty, ILayer))
    End Sub

#End Region
  End Class