LocalizationExtenderProvider Class

obsoleteCodeEntityT:System.ComponentModel.Design.Serialization.CodeDomLocalizationProvider Note: This API is now obsolete.

Provides design-time support for localization features to a root designer.

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


[ObsoleteAttribute("This class has been deprecated. Use CodeDomLocalizationProvider instead.  http://go.microsoft.com/fwlink/?linkid=14202")]
public class LocalizationExtenderProvider : IExtenderProvider, 

System_CAPS_pubmethodLocalizationExtenderProvider(ISite, IComponent)

Initializes a new instance of the LocalizationExtenderProvider class using the specified service provider and base component.


Indicates whether this object can provide its extender properties to the specified object.


Disposes of the resources (other than memory) used by the LocalizationExtenderProvider.


Releases the unmanaged resources used by the LocalizationExtenderProvider and optionally releases the managed resources.


Determines whether the specified object is equal to the current object.(Inherited from Object.)


Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.(Inherited from Object.)


Serves as the default hash function. (Inherited from Object.)


Gets the current resource culture for the specified object.


Gets the default resource culture to use when initializing the values of a localized object at design time.


Gets a value indicating whether the specified object supports resource localization.


Gets the Type of the current instance.(Inherited from Object.)


Creates a shallow copy of the current Object.(Inherited from Object.)


Resets the resource culture for the specified object.

System_CAPS_pubmethodSetLanguage(Object, CultureInfo)

Sets the current resource culture for the specified object to the specified resource culture.

System_CAPS_pubmethodSetLocalizable(Object, Boolean)

Sets a value indicating whether the specified object supports localized resources.


Gets a value indicating whether the specified object must have its localizable values persisted in a resource.


Returns a string that represents the current object.(Inherited from Object.)

LocalizationExtenderProvider can extend an IRootDesigner with a set of properties and methods that provide support for the .NET Framework localization architecture. For more about using resources, see Localization.

The localization support architecture enables designers to initialize component properties using resource files that can be swapped at run time to support a variety of languages, culture-specific styles and dynamically configurable features. You can use the methods of this class to enable designers and code generating serializers to load from resources and build initialization code that uses localization features.

The default serializers that ship with Visual Studio are already capable of localizing components and controls, but they only do so if they locate support for the .NET Framework localization architecture. To detect the presence of localization support, the serialization system must locate a public Boolean property named "Localizable" on the root designer component. If a serializer finds this property, it searches for a property of type CultureInfo named "Language" to determine the current resource configuration. Default serializers use these properties to determine if it should localize any localizable resources of the component, and if so, what CultureInfo format the resource information should be saved in.

The following code example adds a LocalizationExtenderProvider to a component.

// Adds a LocalizationExtenderProvider that provides localization support properties to the specified component.
extender = new LocalizationExtenderProvider(this.component.Site, this.component);

The following code example includes an example component and designer. The designer uses a LocalizationExtenderProvider to add localization support properties for the component.

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

// This example demonstrates adding localization support to a component hierarchy from a 
// custom IRootDesigner using the LocalizationExtenderProvider class.
namespace LocalizationExtenderProviderExample
    // RootViewDesignerComponent is a component associated with the SampleRootDesigner
    // IRootDesigner that provides LocalizationExtenderProvider localization support.
    // This derived class is included at the top of this example to enable 
    // easy launching of designer view without having to put the class in its own file.
    public class RootViewDesignerComponent : RootDesignedComponent
        public RootViewDesignerComponent()

    // The following attribute associates the RootDesignedComponent with the RootDesignedComponent component.
    [Designer(typeof(SampleRootDesigner), typeof(IRootDesigner))]
    public class RootDesignedComponent : Component
        public RootDesignedComponent()

    // Example IRootDesigner implementation demonstrates LocalizationExtenderProvider support.
    internal class SampleRootDesigner : IRootDesigner
        // RootDesignerView Control provides a full region designer view for this root designer's associated component.
        private RootDesignerView m_view;			
        // Stores reference to the LocalizationExtenderProvider this designer adds, in order to remove it on Dispose.
        private LocalizationExtenderProvider extender;        
        // Internally stores the IDesigner's component reference
        private IComponent component;                

        // Adds a LocalizationExtenderProvider for the component this designer is initialized to support.
        public void Initialize(System.ComponentModel.IComponent component)
           this.component = component;

            // If no extender from this designer is active...
            if( extender == null )
                // Adds a LocalizationExtenderProvider that provides localization support properties to the specified component.
                extender = new LocalizationExtenderProvider(this.component.Site, this.component);

        // Provides a RootDesignerView object that supports ViewTechnology.WindowsForms.
        object IRootDesigner.GetView(ViewTechnology technology) 
            if (technology != ViewTechnology.WindowsForms)
                throw new ArgumentException("Not a supported view technology", "technology");
            if (m_view == null )
                // Create the view control. In this example, a Control of type RootDesignerView is used.
                // A WindowsForms ViewTechnology view provider requires a class that inherits from Control.
                m_view = new RootDesignerView(this, this.Component);
            return m_view;

        // This designer supports the WindowsForms view technology.
        ViewTechnology[] IRootDesigner.SupportedTechnologies 
                return new ViewTechnology[] {ViewTechnology.WindowsForms};

        // If a LocalizationExtenderProvider has been added, removes the extender provider.
        protected void Dispose(bool disposing)
            // If an extender has been added, remove it
            if( extender != null  )  
                // Disposes of the extender provider.  The extender 
                // provider removes itself from the extender provider
                // service when it is disposed.
                extender = null;                

        // Empty IDesigner interface property and method implementations
        public System.ComponentModel.Design.DesignerVerbCollection Verbs
                return null;

        public System.ComponentModel.IComponent Component
                return this.component;

        public void DoDefaultAction()

        public void Dispose()

        // RootDesignerView is a simple control that will be displayed in the designer window.
        private class RootDesignerView : Control
            private SampleRootDesigner m_designer;   
            private IComponent comp;

            public RootDesignerView(SampleRootDesigner designer, IComponent component)
                m_designer = designer;                        
                this.comp = component;      
                BackColor = Color.Blue;
                Font = new Font(FontFamily.GenericMonospace, 12);

            // Displays the name of the component and the name of the assembly of the component 
            // that this root designer is providing support for.
            protected override void OnPaint(PaintEventArgs pe)

                if( m_designer != null && comp != null )
                    // Draws the name of the component in large letters.
                    pe.Graphics.DrawString("Root Designer View", Font, Brushes.Yellow, 8, 4);                    
                    pe.Graphics.DrawString("Design Name  : "+comp.Site.Name, new Font("Arial", 10), Brushes.Yellow, 8, 28);                    
                    pe.Graphics.DrawString("Assembly    : "+comp.GetType().AssemblyQualifiedName, new Font("Arial", 10), Brushes.Yellow, new Rectangle(new Point(8, 44), new Size(ClientRectangle.Width-8, ClientRectangle.Height-44)));                   

                    // Uses the site of the component to acquire an ISelectionService and sets the property grid focus to the component.
                    ISelectionService selectionService = (ISelectionService)comp.Site.GetService(typeof(ISelectionService));
                    if( selectionService != null )                
                        selectionService.SetSelectedComponents( new IComponent[] { m_designer.component } );             

.NET Framework
Available since 1.1

Any public static ( Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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