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ComponentDesigner.GetService Method

Attempts to retrieve the specified type of service from the design mode site of the designer's component.

Namespace:  System.ComponentModel.Design
Assembly:  System.Design (in System.Design.dll)

protected virtual Object GetService(
	Type serviceType
)

Parameters

serviceType
Type: System.Type

The type of service to request.

Return Value

Type: System.Object
An object implementing the requested service, or null if the service cannot be resolved.

The default implementation of this method requests the service from the site of the component.

The following code example demonstrates the use of the GetService method to access designer services.

    // 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");
        }
    }

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0
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