ComponentDesigner.GetService メソッド

.NET Framework クラス ライブラリ リファレンス

ComponentDesigner.GetService メソッド

デザイナのコンポーネントのデザイン モード サイトから、指定した型のサービスの取得を試みます。

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

Visual Basic (宣言)

Protected Overridable Function
 GetService ( _
    serviceType As Type _
) As Object

Visual Basic (使用法)

Dim serviceType As Type
Dim returnValue As Object

returnValue = Me.GetService(serviceType)

C#

protected virtual Object GetService (
    Type serviceType
)

C++

protected:
virtual Object^ GetService (
    Type^ serviceType
)

J#

protected Object GetService (
    Type serviceType
)

JScript

protected function GetService (
    serviceType : Type
) : Object

パラメータ

serviceType

要求するサービスの型。

戻り値
要求したサービスを実装しているオブジェクト。サービスを解決できない場合は null 参照 (Visual Basic では Nothing)。

解説

このメソッドの既定の実装は、コンポーネントのサイトからサービスを要求します。

使用例

GetService メソッドの使用してデザイナ サービスにアクセスする方法を示すコード例を次に示します。

Visual Basic

' This utility method connects the designer to various
' services it will use. 
Private Sub InitializeServices()

    ' Acquire a reference to DesignerActionService.
    Me.actionService = GetService(GetType(DesignerActionService))

    ' Acquire a reference to DesignerActionUIService.
    Me.actionUiService = GetService(GetType(DesignerActionUIService))

    ' Acquire a reference to IComponentChangeService.
    Me.changeService = GetService(GetType(IComponentChangeService))

    ' Hook the IComponentChangeService events.
    If Not (Me.changeService
 Is Nothing) Then
        AddHandler Me.changeService.ComponentChanged,
 AddressOf ChangeService_ComponentChanged

        AddHandler Me.changeService.ComponentAdded,
 AddressOf ChangeService_ComponentAdded

        AddHandler Me.changeService.ComponentRemoved,
 AddressOf changeService_ComponentRemoved
    End If

    ' Acquire a reference to ISelectionService.
    Me.selectionService = GetService(GetType(ISelectionService))

    ' Hook the SelectionChanged event.
    If Not (Me.selectionService
 Is Nothing) Then
        AddHandler Me.selectionService.SelectionChanged,
 AddressOf selectionService_SelectionChanged
    End If

    ' Acquire a reference to IDesignerEventService.
    Me.eventService = GetService(GetType(IDesignerEventService))

    If Not (Me.eventService
 Is Nothing) Then
        AddHandler Me.eventService.ActiveDesignerChanged,
 AddressOf eventService_ActiveDesignerChanged
    End If

    ' Acquire a reference to IDesignerHost.
    Me.host = GetService(GetType(IDesignerHost))

    ' Acquire a reference to IDesignerOptionService.
    Me.optionService = GetService(GetType(IDesignerOptionService))

    ' Acquire a reference to IEventBindingService.
    Me.eventBindingService = GetService(GetType(IEventBindingService))

    ' Acquire a reference to IExtenderListService.
    Me.listService = GetService(GetType(IExtenderListService))

    ' Acquire a reference to IReferenceService.
    Me.referenceService = GetService(GetType(IReferenceService))

    ' Acquire a reference to ITypeResolutionService.
    Me.typeResService = GetService(GetType(ITypeResolutionService))

    ' Acquire a reference to IComponentDiscoveryService.
    Me.componentDiscoveryService = GetService(GetType(IComponentDiscoveryService))

    ' Acquire a reference to IToolboxService.
    Me.toolboxService = GetService(GetType(IToolboxService))

    ' Acquire a reference to UndoEngine.
    Me.undoEng = GetService(GetType(UndoEngine))

    If Not (Me.undoEng Is
 Nothing) Then
        MessageBox.Show("UndoEngine")
    End If
End Sub

C#

// This utility method connects the designer to various
// services it will use. 
private void InitializeServices()
{
    // Acquire a reference to DesignerActionService.
    this.actionService =
        GetService(typeof(DesignerActionService))
        as DesignerActionService;

    // Acquire a reference to DesignerActionUIService.
    this.actionUiService =
        GetService(typeof(DesignerActionUIService))
        as DesignerActionUIService;

    // Acquire a reference to IComponentChangeService.
    this.changeService =
        GetService(typeof(IComponentChangeService))
        as IComponentChangeService;

    // Hook the IComponentChangeService events.
    if (this.changeService != null)
    {
        this.changeService.ComponentChanged +=
            new ComponentChangedEventHandler(
            ChangeService_ComponentChanged);

        this.changeService.ComponentAdded +=
            new ComponentEventHandler(
            ChangeService_ComponentAdded);

        this.changeService.ComponentRemoved +=
            new ComponentEventHandler(
            changeService_ComponentRemoved);
    }

    // Acquire a reference to ISelectionService.
    this.selectionService =
        GetService(typeof(ISelectionService))
        as ISelectionService;

    // Hook the SelectionChanged event.
    if (this.selectionService != null)
    {
        this.selectionService.SelectionChanged +=
            new EventHandler(selectionService_SelectionChanged);
    }

    // Acquire a reference to IDesignerEventService.
    this.eventService =
        GetService(typeof(IDesignerEventService))
        as IDesignerEventService;

    if (this.eventService != null)
    {
        this.eventService.ActiveDesignerChanged +=
            new ActiveDesignerEventHandler(
            eventService_ActiveDesignerChanged);
    }

    // Acquire a reference to IDesignerHost.
    this.host =
        GetService(typeof(IDesignerHost))
        as IDesignerHost;

    // Acquire a reference to IDesignerOptionService.
    this.optionService =
        GetService(typeof(IDesignerOptionService))
        as IDesignerOptionService;

    // Acquire a reference to IEventBindingService.
    this.eventBindingService =
        GetService(typeof(IEventBindingService))
        as IEventBindingService;

    // Acquire a reference to IExtenderListService.
    this.listService =
        GetService(typeof(IExtenderListService))
        as IExtenderListService;

    // Acquire a reference to IReferenceService.
    this.referenceService =
        GetService(typeof(IReferenceService))
        as IReferenceService;

    // Acquire a reference to ITypeResolutionService.
    this.typeResService =
        GetService(typeof(ITypeResolutionService))
        as ITypeResolutionService;

    // Acquire a reference to IComponentDiscoveryService.
    this.componentDiscoveryService =
        GetService(typeof(IComponentDiscoveryService))
        as IComponentDiscoveryService;

    // Acquire a reference to IToolboxService.
    this.toolboxService =
        GetService(typeof(IToolboxService))
        as IToolboxService;

    // Acquire a reference to UndoEngine.
    this.undoEng =
        GetService(typeof(UndoEngine))
        as UndoEngine;

    if (this.undoEng != null)
    {
        MessageBox.Show("UndoEngine");
    }
}

.NET Framework のセキュリティ

• 直前の呼び出し元に対する完全な信頼。このメンバは、部分的に信頼されているコードから使用することはできません。詳細については、「」を参照してください。

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
ComponentDesigner クラス
ComponentDesigner メンバ
System.ComponentModel.Design 名前空間
その他の技術情報
方法 : デザイン時サービスにアクセスする