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ComponentDesigner.GetService(Type) Metoda

Definice

Pokusí se načíst zadaný typ služby z webu režimu návrhu komponenty návrháře.

protected:
 virtual System::Object ^ GetService(Type ^ serviceType);
protected virtual object GetService (Type serviceType);
protected virtual object? GetService (Type serviceType);
abstract member GetService : Type -> obj
override this.GetService : Type -> obj
Protected Overridable Function GetService (serviceType As Type) As Object

Parametry

serviceType
Type

Typ služby, která se má vyžadovat.

Návraty

Objekt implementovaný požadovanou službu nebo null pokud službu nelze vyřešit.

Příklady

Následující příklad kódu ukazuje použití GetService metody pro přístup ke službám návrháře.

// 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");
    }
}
' 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 (Me.changeService IsNot 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 (Me.selectionService IsNot Nothing) Then
        AddHandler Me.selectionService.SelectionChanged, AddressOf selectionService_SelectionChanged
    End If

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

    If (Me.eventService IsNot 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 (Me.undoEng IsNot Nothing) Then
        MessageBox.Show("UndoEngine")
    End If
End Sub

Poznámky

Výchozí implementace této metody vyžaduje službu z lokality komponenty.

Platí pro

Viz také