ISelectionService

.NET Framework クラス ライブラリ リファレンス

ISelectionService イベント

パブリック イベント

	名前	説明
	SelectionChanged	現在選択されている対象が変更されたときに発生します。
	SelectionChanging	現在選択されている対象がこれから変更されるときに発生します。

参照

関連項目

ISelectionService インターフェイス
System.ComponentModel.Design 名前空間

ISelectionService インターフェイス

デザイナがコンポーネントを選択するために必要なインターフェイスを提供します。

名前空間: System.ComponentModel.Design
アセンブリ: System (system.dll 内)
構文

Visual Basic (宣言)

<ComVisibleAttribute(True)> _
Public Interface ISelectionService

Visual Basic (使用法)

Dim instance As ISelectionService

C#

[ComVisibleAttribute(true)] 
public interface ISelectionService

C++

[ComVisibleAttribute(true)] 
public interface class ISelectionService

J#

/** @attribute ComVisibleAttribute(true) */ 
public interface ISelectionService

JScript

ComVisibleAttribute(true) 
public interface ISelectionService

解説

コンポーネントが選択されると、そのコンポーネントの表示可能プロパティまたは編集可能プロパティが [プロパティ] ウィンドウに表示されます。

使用例

ISelectionService を使用して、SelectionChanged と SelectionChanging の各イベントを処理する例を次に示します。

Visual Basic

Imports System
Imports System.Drawing
Imports System.Collections
Imports System.ComponentModel
Imports System.ComponentModel.Design
Imports System.Windows.Forms
Imports Microsoft.VisualBasic

'  This sample demonstrates using the ISelectionService
'  interface to receive notification of selection change events.  

'  The SelectionComponent control attempts to retrieve an instance 
'  of the ISelectionService when it is sited. If it can, it attaches
 
'  event handlers for events provided by the service that display
'  a message when a component is selected or deselected.
'  To run this sample, add the SelectionComponent control to a Form
 and
'  then select or deselect components in design mode to see the behavior
 
'  of the component change event handlers. 

Namespace ISelectionServiceExample

    Public Class SelectionComponent
        Inherits System.Windows.Forms.UserControl
        Private tbox1 As System.Windows.Forms.TextBox
        Private selectionService As ISelectionService
        

        Public Sub New()
            ' Initialize control
            Me.SuspendLayout()
            Me.Name = "SelectionComponent"
            Me.Size = New System.Drawing.Size(608,
 296)
            Me.tbox1 = New System.Windows.Forms.TextBox()
            Me.tbox1.Location = New System.Drawing.Point(24,
 16)
            Me.tbox1.Name = "listBox1"
            Me.tbox1.Multiline = True
            Me.tbox1.Size = New System.Drawing.Size(560,
 251)
            Me.tbox1.TabIndex = 0
            Me.Controls.Add(Me.tbox1)
            Me.ResumeLayout()
        End Sub 'New

        Public Overrides Property
 Site() As ISite
            Get
                Return MyBase.Site
            End Get
            Set(ByVal Value As
 ISite)
                ' The ISelectionService is available in design mode
 
                ' only, and only after the component is sited.
                If Not (selectionService Is
 Nothing) Then
                    ' Because the selection service has been 
                    ' previously obtained, the component may be in 
                    ' the process of being resited. 
                    ' Detatch the previous selection change event 
                    ' handlers in case the new selection
                    ' service is a new service instance belonging to
 
                    ' another design mode service host.
                    RemoveHandler selectionService.SelectionChanged,
 AddressOf OnSelectionChanged
                    RemoveHandler selectionService.SelectionChanging,
 AddressOf OnSelectionChanging
                End If

                ' Establish the new site for the component.
                MyBase.Site = Value

                If MyBase.Site Is
 Nothing Then
                    Return
                End If

                ' The selection service is not available outside of
 
                ' design mode. A call requesting the service 
                ' using GetService while not in design mode will 
                ' return null.
                selectionService = Me.Site.GetService(GetType(ISelectionService))

                ' If an instance of the ISelectionService was obtained,
 
                ' attach event handlers for the selection 
                ' changing and selection changed events.
                If Not (selectionService Is
 Nothing) Then
                    ' Add an event handler for the SelectionChanging
 and SelectionChanged events.
                    AddHandler selectionService.SelectionChanging,
 AddressOf OnSelectionChanging
                    AddHandler selectionService.SelectionChanged,
 AddressOf OnSelectionChanged
                End If
            End Set
        End Property

        Private Sub OnSelectionChanged(ByVal
 sender As Object, ByVal
 args As EventArgs)            
            tbox1.AppendText("The selected component was changed.
  Selected components:" + Microsoft.VisualBasic.ControlChars.CrLf +
 "    " + GetSelectedComponents() + Microsoft.VisualBasic.ControlChars.CrLf)
        End Sub 'OnSelectionChanged

        Private Sub OnSelectionChanging(ByVal
 sender As Object, ByVal
 args As EventArgs)                        
            tbox1.AppendText("The selected component is changing.
  Selected components:" + Microsoft.VisualBasic.ControlChars.CrLf +
 "    " + GetSelectedComponents() + Microsoft.VisualBasic.ControlChars.CrLf)
        End Sub 'OnSelectionChanging

        Private Function GetSelectedComponents()
 As String
            Dim selectedString As String
 = String.Empty
            Dim components(CType(selectionService.GetSelectedComponents(),
 ICollection).Count - 1) As Object
            CType(selectionService.GetSelectedComponents(), ICollection).CopyTo(components,
 0)

            Dim i As Integer
            For i = 0 To components.Length
 - 1
                If i <> 0 Then
                    selectedString += "&& "
                End If
                If CType(selectionService.PrimarySelection, IComponent)
 Is CType(components(i), IComponent) Then
                    selectedString += "PrimarySelection:"
                End If
                selectedString += CType(components(i), IComponent).Site.Name + "
 "
            Next i

            Return selectedString
        End Function 'GetSelectedComponents

        ' Clean up any resources being used.
        Protected Overloads Overrides
 Sub Dispose(ByVal disposing As
 Boolean)
            ' Detatch the event handlers for the selection service.
            If Not (selectionService Is
 Nothing) Then
                RemoveHandler selectionService.SelectionChanging,
 AddressOf OnSelectionChanging
                RemoveHandler selectionService.SelectionChanged,
 AddressOf OnSelectionChanged
            End If
            MyBase.Dispose(disposing)
        End Sub 'Dispose
    End Class 'SelectionComponent

End Namespace 'ISelectionServiceExample

C#

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.ComponentModel.Design;
using System.Windows.Forms;

/*  This sample demonstrates using the ISelectionService
    interface to receive notification of selection change events.  
    The SelectionComponent control attempts to retrieve an instance 
    of the ISelectionService when it is sited. If it can, it attaches 
    event handlers for events provided by the service that display
    a message when a component is selected or deselected.

    To run this sample, add the SelectionComponent control to
 a Form and
    then select or deselect components in design mode to see the
 behavior 
    of the component change event handlers. */

namespace ISelectionServiceExample 
{
    public class SelectionComponent : System.Windows.Forms.UserControl
 
    {        
        private System.Windows.Forms.TextBox tbox1;
        private ISelectionService selectionService;
        
        public SelectionComponent() 
        {
            // Initialize control
            this.SuspendLayout();            
            this.Name = "SelectionComponent";
            this.Size = new System.Drawing.Size(608,
 296);                                    
            this.tbox1 = new System.Windows.Forms.TextBox();
            
            this.tbox1.Location = new System.Drawing.Point(24,
 16);
            this.tbox1.Name = "listBox1";
            this.tbox1.Multiline = true;
            this.tbox1.Size = new System.Drawing.Size(560,
 251);
            this.tbox1.TabIndex = 0;
            this.Controls.Add(this.tbox1);
            this.ResumeLayout();
        }
        
        public override ISite Site 
        {
            get 
            {
                return base.Site;
            }
            set 
            {
                // The ISelectionService is available in design mode
 
                // only, and only after the component is sited.
                if (selectionService != null)
 
                {
                    // Because the selection service has been 
                    // previously obtained, the component may be in
 
                    // the process of being resited. 
                    // Detatch the previous selection change event 
                    // handlers in case the new selection
                    // service is a new service instance belonging to
 
                    // another design mode service host.
                    selectionService.SelectionChanged -= new EventHandler(OnSelectionChanged);
                    selectionService.SelectionChanging -= new
 EventHandler(OnSelectionChanging);
                }

                // Establish the new site for the component.
                base.Site = value;                

                if( base.Site == null
 )
                    return;

                // The selection service is not available outside of
 
                // design mode. A call requesting the service 
                // using GetService while not in design mode will 
                // return null.
                selectionService = (ISelectionService)this.Site.GetService(typeof(ISelectionService));

                // If an instance of the ISelectionService was obtained,
 
                // attach event handlers for the selection 
                // changing and selection changed events.
                if (selectionService != null)
                {
                    // Add an event handler for the SelectionChanging
 
                    // and SelectionChanged events.
                    selectionService.SelectionChanging += new
 EventHandler(OnSelectionChanging);                    
                    selectionService.SelectionChanged += new EventHandler(OnSelectionChanged);
    
                }
            }
        }
        
        private void OnSelectionChanged(object
 sender, EventArgs args)
        {                        
            tbox1.AppendText("The selected component was changed.  Selected
 components:\r\n    " + GetSelectedComponents() + "\r\n");
        }
        
        private void OnSelectionChanging(object
 sender, EventArgs args)
        {
            tbox1.AppendText("The selected component is changing. Selected components:\r\n
    " + GetSelectedComponents() + "\r\n");            
        }
        
        private string GetSelectedComponents()
        {
            string selectedString = String.Empty;
            object[] components = new object[((ICollection)selectionService.GetSelectedComponents()).Count];
            ((ICollection)selectionService.GetSelectedComponents()).CopyTo(components,
 0);

            for(int i=0; i<components.Length;
 i++)
            {
                if( i != 0 )
                    selectedString += "&& ";
                if( ((IComponent)selectionService.PrimarySelection)
 == ((IComponent)components[i]) )
                    selectedString += "PrimarySelection:";            
    
                selectedString += ((IComponent)components[i]).Site.Name+" ";
            }
            return selectedString;
        }
        
        // Clean up any resources being used.
        protected override void Dispose( bool
 disposing )
        {
            // Detatch the event handlers for the selection service.
            if( selectionService != null )
            {
                selectionService.SelectionChanging -= new EventHandler(this.OnSelectionChanging);
                selectionService.SelectionChanged -= new EventHandler(this.OnSelectionChanged);
            }

            base.Dispose( disposing );
        }
    }
}

C++

#using <System.Windows.Forms.dll>
#using <System.dll>
#using <System.Drawing.dll>

using namespace System;
using namespace System::Drawing;
using namespace System::Collections;
using namespace System::ComponentModel;
using namespace System::ComponentModel::Design;
using namespace System::Windows::Forms;

/*  This sample demonstrates using the ISelectionService
interface to receive notification of selection change events.  
The SelectionComponent control attempts to retrieve an instance 
of the ISelectionService when it is sited. If it can, it attaches 
event handlers for events provided by the service that display
a message when a component is selected or deselected.

To run this sample, add the SelectionComponent control to a Form
 and
then select or deselect components in design mode to see the behavior
 
of the component change event handlers. */
namespace ISelectionServiceExample
{
   public ref class SelectionComponent: public
 System::Windows::Forms::UserControl
   {
   private:
      System::Windows::Forms::TextBox^ tbox1;
      ISelectionService^ selectionService;

   public:
      SelectionComponent()
      {
         // Initialize control
         this->SuspendLayout();
         this->Name = "SelectionComponent";
         this->Size = System::Drawing::Size( 608, 296 );
         this->tbox1 = gcnew System::Windows::Forms::TextBox;
         this->tbox1->Location = System::Drawing::Point(
 24, 16 );
         this->tbox1->Name = "listBox1";
         this->tbox1->Multiline = true;
         this->tbox1->Size = System::Drawing::Size( 560,
 251 );
         this->tbox1->TabIndex = 0;
         this->Controls->Add( this->tbox1
 );
         this->ResumeLayout();
      }

      property ISite^ Site 
      {
         virtual ISite^ get() override
         {
            return __super::Site;
         }

         virtual void set( ISite^ value ) override
         {
            // The ISelectionService is available in design mode 
            // only, and only after the component is sited.
            if ( selectionService != nullptr )
            {
               // Because the selection service has been 
               // previously obtained, the component may be in 
               // the process of being resited. 
               // Detatch the previous selection change event 
               // handlers in case the new selection
               // service is a new service instance belonging to 
               // another design mode service host.
               selectionService->SelectionChanged -= gcnew EventHandler( this,
 &SelectionComponent::OnSelectionChanged );
               selectionService->SelectionChanging -= gcnew EventHandler( this,
 &SelectionComponent::OnSelectionChanging );
            }

            // Establish the new site for the component.
            __super::Site = value;
            if ( __super::Site == nullptr )
                        return;

            // The selection service is not available outside of 
            // design mode. A call requesting the service 
            // using GetService while not in design mode will 
            // return null.
            selectionService = dynamic_cast<ISelectionService^>(this->Site->GetService(
 ISelectionService::typeid ));

            // If an instance of the ISelectionService was obtained,
 
            // attach event handlers for the selection 
            // changing and selection changed events.
            if ( selectionService != nullptr )
            {
               // Add an event handler for the SelectionChanging 
               // and SelectionChanged events.
               selectionService->SelectionChanging += gcnew EventHandler( this,
 &SelectionComponent::OnSelectionChanging );
               selectionService->SelectionChanged += gcnew EventHandler( this,
 &SelectionComponent::OnSelectionChanged );
            }
         }
      }

   private:
      void OnSelectionChanged( Object^ /*sender*/, EventArgs^
 /*args*/ )
      {
         tbox1->AppendText( String::Format( "The selected component was changed.
  Selected components:\r\n    {0}\r\n", GetSelectedComponents() ) );
      }

      void OnSelectionChanging( Object^ /*sender*/, EventArgs^
 /*args*/ )
      {
         tbox1->AppendText( String::Format( "The selected component is changing.
 Selected components:\r\n    {0}\r\n", GetSelectedComponents() ) );
      }

      String^ GetSelectedComponents()
      {
         String^ selectedString = String::Empty;
         array<Object^>^components = gcnew array<Object^>((dynamic_cast<ICollection^>(selectionService->GetSelectedComponents()))->Count);
         (dynamic_cast<ICollection^>(selectionService->GetSelectedComponents()))->CopyTo(
 components, 0 );
         for ( int i = 0; i < components->Length;
 i++ )
         {
            if ( i != 0 )
                        selectedString = selectedString + "&& ";

            if ( (dynamic_cast<IComponent^>(selectionService->PrimarySelection))
 == (dynamic_cast<IComponent^>(components[ i ])) )
                        selectedString = selectedString + "PrimarySelection:";

            selectedString = selectedString + (dynamic_cast<IComponent^>(components[
 i ]))->Site->Name + " ";

         }
         return selectedString;
      }

      // Clean up any resources being used.
   public:
      ~SelectionComponent()
      {
         // Detach the event handlers for the selection service.
         if ( selectionService != nullptr )
         {
            selectionService->SelectionChanging -= gcnew EventHandler( this,
 &SelectionComponent::OnSelectionChanging );
            selectionService->SelectionChanged -= gcnew EventHandler( this,
 &SelectionComponent::OnSelectionChanged );
         }
      }
   };
}

J#

package ISelectionServiceExample;
 
import System.*;
import System.Drawing.*;
import System.Collections.*;
import System.ComponentModel.*;
import System.ComponentModel.Design.*;
import System.Windows.Forms.*;

/*  This sample demonstrates using the ISelectionService
    interface to receive notification of selection change events.  
    The SelectionComponent control attempts to retrieve an instance 
    of the ISelectionService when it is sited. If it can, it attaches 
    event handlers for events provided by the service that display
    a message when a component is selected or deselected.

    To run this sample, add the SelectionComponent control to
 a Form and
    then select or deselect components in design mode to see the
 behavior 
    of the component change event handlers. 
 */
public class SelectionComponent extends System.Windows.Forms.UserControl
{    
    private System.Windows.Forms.TextBox tbox1;
    private ISelectionService selectionService;

    public SelectionComponent()
    {
        // Initialize control
        this.SuspendLayout();
        this.set_Name("SelectionComponent");
        this.set_Size(new System.Drawing.Size(608,
 296));
        this.tbox1 = new System.Windows.Forms.TextBox();
        this.tbox1.set_Location(new System.Drawing.Point(24,
 16));
        this.tbox1.set_Name("listBox1");
        this.tbox1.set_Multiline(true);
        this.tbox1.set_Size(new System.Drawing.Size(560,
 251));
        this.tbox1.set_TabIndex(0);
        this.get_Controls().Add(this.tbox1);
        this.ResumeLayout();
    } //SelectionComponent

    /** @property 
     */
    public ISite get_Site()
    {
        return super.get_Site();
    } //get_Site

    /** @property
     */
    public void set_Site(ISite value)
    {
        // The ISelectionService is available in design mode 
        // only, and only after the component is sited.
        if (selectionService != null) {
            // Because the selection service has been 
            // previously obtained, the component may be in 
            // the process of being resited. 
            // Detatch the previous selection change event 
            // handlers in case the new selection
            // service is a new service instance belonging to 
            // another design mode service host.
            selectionService.remove_SelectionChanged(
                new EventHandler(OnSelectionChanged));
            selectionService.remove_SelectionChanging(
                new EventHandler(OnSelectionChanging));
        }
        // Establish the new site for the component.
        super.set_Site(value);
        if (super.get_Site() == null) {
            return;
        }
        // The selection service is not available outside of 
        // design mode. A call requesting the service 
        // using GetService while not in design mode will 
        // return null.
        selectionService = ((ISelectionService)(
            this.get_Site().GetService(ISelectionService.class.ToType())));

        // If an instance of the ISelectionService was obtained, 
        // attach event handlers for the selection 
        // changing and selection changed events.
        if (selectionService != null) {
            // Add an event handler for the SelectionChanging 
            // and SelectionChanged events.
            selectionService.add_SelectionChanging(
                new EventHandler(OnSelectionChanging));
            selectionService.add_SelectionChanged(
                new EventHandler(OnSelectionChanged));
        }
    } //set_Site

    private void OnSelectionChanged(Object
 sender, EventArgs args)
    {
        tbox1.AppendText("The selected component was changed.  Selected"
            + " components:\r\n    " + GetSelectedComponents() + "\r\n");
    } //OnSelectionChanged

    private void OnSelectionChanging(Object
 sender, EventArgs args)
    {
        tbox1.AppendText("The selected component is changing. Selected"
            + " components:\r\n    " + GetSelectedComponents() + "\r\n");
    } //OnSelectionChanging

    private String GetSelectedComponents()
    {
        String selectedString = "";
        Object components[] = new Object[((ICollection)(
            selectionService.GetSelectedComponents())).get_Count()];
        ((ICollection)(selectionService.GetSelectedComponents())).
            CopyTo(components, 0);
        for (int i = 0; i < components.length;
 i++) {
            if (i != 0) {
                selectedString += "&& ";
            }
            if (((IComponent)(selectionService.get_PrimarySelection())).Equals(
 
                (IComponent)(components.get_Item(i)))) {
                selectedString += "PrimarySelection:";
            }
            selectedString += ((IComponent)(components.get_Item(i))).
                get_Site().get_Name() + " ";
        }
        return selectedString;
    } //GetSelectedComponents

    // Clean up any resources being used.
    protected void Dispose(boolean disposing)
    {
        // Detatch the event handlers for the selection service.
        if (selectionService != null) {
            selectionService.remove_SelectionChanging(
                new EventHandler(this.OnSelectionChanging));
            selectionService.remove_SelectionChanged(
                new EventHandler(this.OnSelectionChanged));
        }
        super.Dispose(disposing);
    } //Dispose
} //SelectionComponent

プラットフォーム

Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

開発プラットフォームの中には、.NET Framework によってサポートされていないバージョンがあります。サポートされているバージョンについては、「システム要件」を参照してください。

バージョン情報

.NET Framework
サポート対象 : 2.0、1.1、1.0

参照

関連項目
ISelectionService メンバ
System.ComponentModel.Design 名前空間

ISelectionService プロパティ

パブリック プロパティ

	名前	説明
	PrimarySelection	現在の主要選択オブジェクトであるオブジェクトを取得します。
	SelectionCount	選択されているオブジェクトの数を取得します。

参照

関連項目

ISelectionService インターフェイス
System.ComponentModel.Design 名前空間

ISelectionService メソッド

パブリック メソッド

	名前	説明
	GetComponentSelected	指定したコンポーネントが現在選択されているかどうかを示す値を取得します。
	GetSelectedComponents	現在選択されているコンポーネントのコレクションを取得します。
	SetSelectedComponents	オーバーロードされます。 指定したコンポーネントを選択します。

参照

関連項目

ISelectionService インターフェイス
System.ComponentModel.Design 名前空間

ISelectionService メンバ

デザイナがコンポーネントを選択するために必要なインターフェイスを提供します。

ISelectionService データ型で公開されるメンバを以下の表に示します。

パブリック プロパティ

	名前	説明
	PrimarySelection	現在の主要選択オブジェクトであるオブジェクトを取得します。
	SelectionCount	選択されているオブジェクトの数を取得します。

パブリック メソッド

	名前	説明
	GetComponentSelected	指定したコンポーネントが現在選択されているかどうかを示す値を取得します。
	GetSelectedComponents	現在選択されているコンポーネントのコレクションを取得します。
	SetSelectedComponents	オーバーロードされます。 指定したコンポーネントを選択します。

パブリック イベント

	名前	説明
	SelectionChanged	現在選択されている対象が変更されたときに発生します。
	SelectionChanging	現在選択されている対象がこれから変更されるときに発生します。

参照

関連項目

ISelectionService インターフェイス
System.ComponentModel.Design 名前空間