IEventBindingService インターフェイス

リファレンス

定義

名前空間:: System.ComponentModel.Design

アセンブリ:: System.ComponentModel.TypeConverter.dll

アセンブリ:: System.dll

アセンブリ:: netstandard.dll

重要

一部の情報は、リリース前に大きく変更される可能性があるプレリリースされた製品に関するものです。 Microsoft は、ここに記載されている情報について、明示または黙示を問わず、一切保証しません。

コンポーネントのイベントに対するイベントハンドラーを登録するためのサービスを提供します。

public interface class IEventBindingService

public interface IEventBindingService

[System.Runtime.InteropServices.ComVisible(true)]
public interface IEventBindingService

type IEventBindingService = interface

[<System.Runtime.InteropServices.ComVisible(true)>]
type IEventBindingService = interface

Public Interface IEventBindingService

派生: System.ComponentModel.Design.EventBindingService

属性: ComVisibleAttribute

例

次の例は、を使用 IEventBindingService して、デザイナーがコンポーネントに追加するカスタムショートカットメニューコマンドが呼び出されたときに、デザイン時にコンポーネントのイベントをイベントハンドラーにリンクするデザイナーを示しています。この例を使用するには、クラスライブラリにコンパイルし、Windows フォームプロジェクトから参照を追加し、ツールボックスを右クリックして [ツールボックスのカスタマイズ] を選択し、クラスライブラリを選択して [OK] をクリックし、EventControl のインスタンスを Form に追加して、クラスライブラリ内のコンポーネントをツールボックスに追加します。次に、EventControl を右クリックし、[テストの接続][イベント] ショートカットメニューコマンドをクリックします。空のイベントハンドラーメソッドが作成され、EventControl の testEvent メソッドが Form の初期化コードでこのイベントハンドラーに初期化されます。

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

using namespace System;
using namespace System::Collections;
using namespace System::ComponentModel;
using namespace System::ComponentModel::Design;
using namespace System::Drawing;
using namespace System::Data;
using namespace System::Windows::Forms;
using namespace System::Windows::Forms::Design;
using namespace System::Security::Permissions;

// This designer provides a "Connect testEvent" designer verb shortcut 
// menu command. When invoked, the command attaches a new event-handler 
// method named "testEventHandler" to the "testEvent" event of an 
// associated control.
// If a "testEvent" event of the associated control does not exist, 
// the IEventBindingService declares it.
public ref class EventDesigner: public System::Windows::Forms::Design::ControlDesigner
{
public:
   EventDesigner(){}

   // When the "Connect testEvent" designer verb shortcut menu 
   // command is invoked, this method uses the 
   // IEventBindingService to attach an event handler to a 
   // "textEvent" event of the associated control.
private:
   void ConnectEvent( Object^ /*sender*/, EventArgs^ /*e*/ )
   {
      IEventBindingService^ eventservice = dynamic_cast<IEventBindingService^>(this->Component->Site->GetService( System::ComponentModel::Design::IEventBindingService::typeid ));
      if ( eventservice != nullptr )
      {
         // Attempt to obtain a PropertyDescriptor for a 
         // component event named "testEvent".
         EventDescriptorCollection^ edc = TypeDescriptor::GetEvents( this->Component );
         if ( edc == nullptr || edc->Count == 0 )
                  return;
         EventDescriptor^ ed = nullptr;

         // Search for an event named "testEvent".
         IEnumerator^ myEnum = edc->GetEnumerator();
         while ( myEnum->MoveNext() )
         {
            EventDescriptor^ edi = safe_cast<EventDescriptor^>(myEnum->Current);
            if ( edi->Name->Equals( "testEvent" ) )
            {
               ed = edi;
               break;
            }
         }
         if ( ed == nullptr )
                  return;

         // Use the IEventBindingService to get a 
         // PropertyDescriptor for the event.
         PropertyDescriptor^ pd = eventservice->GetEventProperty( ed );
         if ( pd == nullptr )
                  return;

         // Set the value of the event to "testEventHandler".
         pd->SetValue( this->Component, "testEventHandler" );
      }
   }

public:
   property System::ComponentModel::Design::DesignerVerbCollection^ Verbs 
   {
      // Provides a designer verb command for the designer's 
      // shortcut menu.
      [PermissionSetAttribute(SecurityAction::Demand, Name="FullTrust")]
      virtual System::ComponentModel::Design::DesignerVerbCollection^ get() override
      {
         DesignerVerbCollection^ dvc = gcnew DesignerVerbCollection;
         dvc->Add( gcnew DesignerVerb( "Connect testEvent",gcnew EventHandler( this, &EventDesigner::ConnectEvent ) ) );
         return dvc;
      }
   }
};

// EventControl is associated with the EventDesigner and displays 
// instructions for demonstrating the service.

[Designer(EventDesigner::typeid)]
public ref class EventControl: public System::Windows::Forms::UserControl
{
public:
   event System::EventHandler^ testEvent;
   EventControl()
   {
      this->BackColor = Color::White;
      this->Size = System::Drawing::Size( 320, 96 );
   }

public:
   ~EventControl()
   {
   }

protected:
   virtual void OnPaint( System::Windows::Forms::PaintEventArgs^ e ) override
   {
      e->Graphics->DrawString( "IEventBindingService Example Control", gcnew System::Drawing::Font( FontFamily::GenericMonospace,10 ), gcnew SolidBrush( Color::Blue ), 5, 5 );
      e->Graphics->DrawString( "Use the \"Connect testEvent\" command of the", gcnew System::Drawing::Font( FontFamily::GenericMonospace,8 ), gcnew SolidBrush( Color::Black ), 5, 22 );
      e->Graphics->DrawString( "right-click shortcut menu provided by this", gcnew System::Drawing::Font( FontFamily::GenericMonospace,8 ), gcnew SolidBrush( Color::Black ), 5, 32 );
      e->Graphics->DrawString( "control's associated EventDesigner to create", gcnew System::Drawing::Font( FontFamily::GenericMonospace,8 ), gcnew SolidBrush( Color::Black ), 5, 42 );
      e->Graphics->DrawString( "a new event handler linked with the testEvent", gcnew System::Drawing::Font( FontFamily::GenericMonospace,8 ), gcnew SolidBrush( Color::Black ), 5, 52 );
      e->Graphics->DrawString( "of this control in the initialization code", gcnew System::Drawing::Font( FontFamily::GenericMonospace,8 ), gcnew SolidBrush( Color::Black ), 5, 62 );
      e->Graphics->DrawString( "for this control.", gcnew System::Drawing::Font( FontFamily::GenericMonospace,8 ), gcnew SolidBrush( Color::Black ), 5, 72 );
   }
};

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

namespace EventDesignerTest
{
    // This designer provides a "Connect testEvent" designer verb shortcut 
    // menu command. When invoked, the command attaches a new event-handler 
    // method named "testEventHandler" to the "testEvent" event of an 
    // associated control.
    // If a "testEvent" event of the associated control does not exist, 
    // the IEventBindingService declares it.
    public class EventDesigner : System.Windows.Forms.Design.ControlDesigner
    {
        public EventDesigner()
        {
        }
        
        // When the "Connect testEvent" designer verb shortcut menu 
        // command is invoked, this method uses the 
        // IEventBindingService to attach an event handler to a 
        // "textEvent" event of the associated control.
        private void ConnectEvent(object sender, EventArgs e)
        {
            IEventBindingService eventservice = (IEventBindingService)this.Component.Site.GetService(typeof(System.ComponentModel.Design.IEventBindingService));
            if( eventservice != null )
            {
                // Attempt to obtain a PropertyDescriptor for a 
                // component event named "testEvent".
                EventDescriptorCollection edc = TypeDescriptor.GetEvents(this.Component);				
                if( edc == null || edc.Count == 0 )
                    return;
                                
                EventDescriptor ed = null;
                // Search for an event named "testEvent".
                foreach(EventDescriptor edi in edc)
                    if(edi.Name == "testEvent")
                    {
                        ed = edi;
                        break;
                    }
                if( ed == null )
                    return;

                // Use the IEventBindingService to get a 
                // PropertyDescriptor for the event.
                PropertyDescriptor pd = eventservice.GetEventProperty(ed);
                if( pd == null )
                    return;				
                
                // Set the value of the event to "testEventHandler".
                pd.SetValue(this.Component, "testEventHandler");
            }
        }

                // Provides a designer verb command for the designer's 
                // shortcut menu.
        public override System.ComponentModel.Design.DesignerVerbCollection Verbs
        {
            get
            {
                DesignerVerbCollection dvc = new DesignerVerbCollection();
                dvc.Add(new DesignerVerb("Connect testEvent", new EventHandler(ConnectEvent)));
                return dvc;
            }
        }
    }

    // EventControl is associated with the EventDesigner and displays 
    // instructions for demonstrating the service.
    [Designer(typeof(EventDesigner))]
    public class EventControl : System.Windows.Forms.UserControl
    {
        public event System.EventHandler testEvent;

        public EventControl()
        {		
            this.BackColor = Color.White;	
            this.Size = new Size(320, 96);
        }

        protected override void Dispose( bool disposing )
        {
            base.Dispose( disposing );
        }

        protected override void OnPaint(System.Windows.Forms.PaintEventArgs e)
        {
            e.Graphics.DrawString("IEventBindingService Example Control", new Font(FontFamily.GenericMonospace, 10), new SolidBrush(Color.Blue), 5, 5);
            
            e.Graphics.DrawString("Use the \"Connect testEvent\" command of the", new Font(FontFamily.GenericMonospace, 8), new SolidBrush(Color.Black), 5, 22);
            e.Graphics.DrawString("right-click shortcut menu provided by this", new Font(FontFamily.GenericMonospace, 8), new SolidBrush(Color.Black), 5, 32);
            e.Graphics.DrawString("control's associated EventDesigner to create", new Font(FontFamily.GenericMonospace, 8), new SolidBrush(Color.Black), 5, 42);
            e.Graphics.DrawString("a new event handler linked with the testEvent", new Font(FontFamily.GenericMonospace, 8), new SolidBrush(Color.Black), 5, 52);
            e.Graphics.DrawString("of this control in the initialization code", new Font(FontFamily.GenericMonospace, 8), new SolidBrush(Color.Black), 5, 62);
            e.Graphics.DrawString("for this control.", new Font(FontFamily.GenericMonospace, 8), new SolidBrush(Color.Black), 5, 72);
        }
    }
}

Imports System.Collections
Imports System.ComponentModel
Imports System.ComponentModel.Design
Imports System.Data
Imports System.Drawing
Imports System.Windows.Forms
Imports System.Windows.Forms.Design

Namespace EventDesignerTest
    ' This designer provides a "Connect testEvent" designer verb shortcut 
    ' menu command. When invoked, the command attaches a new event-handler 
    ' method named "testEventHandler" to the "testEvent" event of an 
    ' associated control.
    ' If a "testEvent" event of the associated control does not exist, 
    ' the IEventBindingService declares it.
    <System.Security.Permissions.PermissionSetAttribute(System.Security.Permissions.SecurityAction.Demand, Name:="FullTrust")> _
    Public Class EventDesigner
        Inherits System.Windows.Forms.Design.ControlDesigner

        Public Sub New()
        End Sub

        ' When the "Connect testEvent" designer verb shortcut menu 
        ' command is invoked, this method uses the 
        ' IEventBindingService to attach an event handler to a "textEvent" event of the associated control.
        Private Sub ConnectEvent(ByVal sender As Object, ByVal e As EventArgs)
            Dim eventservice As IEventBindingService = CType(Me.Component.Site.GetService(GetType(System.ComponentModel.Design.IEventBindingService)), IEventBindingService)
            If (eventservice IsNot Nothing) Then
                ' Attempt to obtain a PropertyDescriptor for a 
                ' component event named "testEvent".
                Dim edc As EventDescriptorCollection = TypeDescriptor.GetEvents(Me.Component)
                If edc Is Nothing Or edc.Count = 0 Then
                    Return
                End If
                Dim ed As EventDescriptor = Nothing
                ' Search for an event named "testEvent".
                Dim edi As EventDescriptor
                For Each edi In edc
                    If edi.Name = "testEvent" Then
                        ed = edi
                        Exit For
                    End If
                Next edi
                If ed Is Nothing Then
                    Return
                End If
                ' Use the IEventBindingService to get a 
                ' PropertyDescriptor for the event.
                Dim pd As PropertyDescriptor = eventservice.GetEventProperty(ed)
                If pd Is Nothing Then
                    Return
                End If
                ' Set the value of the event to "testEventHandler".
                pd.SetValue(Me.Component, "testEventHandler")
            End If
        End Sub

        ' Provides a designer verb command for the designer's 
        ' shortcut menu.
        Public Overrides ReadOnly Property Verbs() As System.ComponentModel.Design.DesignerVerbCollection
            Get
                Dim dvc As New DesignerVerbCollection()
                dvc.Add(New DesignerVerb("Connect testEvent", New EventHandler(AddressOf ConnectEvent)))
                Return dvc
            End Get
        End Property
    End Class

    ' EventControl is associated with the EventDesigner and displays 
    ' instructions for demonstrating the service.
    <Designer(GetType(EventDesigner))> _
    Public Class EventControl
        Inherits System.Windows.Forms.UserControl
        Public Event testEvent As System.EventHandler

        Public Sub New()
            Me.BackColor = Color.White
            Me.Size = New Size(320, 96)
        End Sub

        Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
            MyBase.Dispose(disposing)
        End Sub

        Protected Overrides Sub OnPaint(ByVal e As System.Windows.Forms.PaintEventArgs)
            e.Graphics.DrawString("IEventBindingService Example Control", New Font(FontFamily.GenericMonospace, 10), New SolidBrush(Color.Blue), 5, 5)
            e.Graphics.DrawString("Use the ""Connect testEvent"" command of the", New Font(FontFamily.GenericMonospace, 8), New SolidBrush(Color.Black), 5, 22)
            e.Graphics.DrawString("right-click shortcut menu provided by this", New Font(FontFamily.GenericMonospace, 8), New SolidBrush(Color.Black), 5, 32)
            e.Graphics.DrawString("control's associated EventDesigner to create", New Font(FontFamily.GenericMonospace, 8), New SolidBrush(Color.Black), 5, 42)
            e.Graphics.DrawString("a new event handler linked with the testEvent", New Font(FontFamily.GenericMonospace, 8), New SolidBrush(Color.Black), 5, 52)
            e.Graphics.DrawString("of this control in the initialization code", New Font(FontFamily.GenericMonospace, 8), New SolidBrush(Color.Black), 5, 62)
            e.Graphics.DrawString("for this control.", New Font(FontFamily.GenericMonospace, 8), New SolidBrush(Color.Black), 5, 72)
        End Sub

    End Class
End Namespace

注釈

イベントバインドサービスは、デザイナーコードからコンポーネントイベントとイベントハンドラーをリンクする方法を提供します。

を使用して IEventBindingServiceイベントハンドラーをコンポーネントイベントにリンクするには、リンクするコンポーネントのイベントのを最初に取得 EventDescriptor する必要があります。にはIEventBindingService、をイベント PropertyDescriptor ハンドラーメソッド名でイベントを構成するために使用できるに変換EventDescriptorできるメソッドが用意されています。

オブジェクトにはTypeDescriptor、コンポーネントのGetEvents各イベントの格納EventDescriptorオブジェクトをEventDescriptorCollection取得するために使用できるメソッドが用意されています。のメソッドとメソッドはGetEventProperty、いずれかのメソッドにIEventBindingService渡されるごとに EventDescriptor を返しますPropertyDescriptor。GetEventProperties または GetEventProperties からGetEventProperty返されるそれぞれPropertyDescriptorには、文字列のプロパティ型があります。この文字列は、のメソッドを使用して SetValue 、とイベントをリンクするイベントハンドラーメソッドの名前を示す値に PropertyDescriptor設定できます。

メソッド

CreateUniqueMethodName(IComponent, EventDescriptor)	指定したコンポーネントおよびイベントのイベントハンドラーメソッドに対して一意の名前を作成します。
GetCompatibleMethods(EventDescriptor)	指定したイベントと互換性のあるメソッドシグネチャを持つイベントハンドラーメソッドのコレクションを取得します。
GetEvent(PropertyDescriptor)	指定したプロパティ記述子がイベントを表す場合、そのイベントの EventDescriptor を取得します。
GetEventProperties(EventDescriptorCollection)	一連のイベント記述子を一連のプロパティ記述子に変換します。
GetEventProperty(EventDescriptor)	単一のイベント記述子をプロパティ記述子に変換します。
ShowCode()	デザイナーに関連するコードを表示します。
ShowCode(IComponent, EventDescriptor)	指定したイベントに関連するコードを表示します。
ShowCode(Int32)	デザイナーに関連するコードの指定した行を表示します。

適用対象

次の方法で共有

IEventBindingService インターフェイス

定義

例

注釈

メソッド

適用対象

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その他のリソース