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IDictionaryService (Interfaz)

Proporciona un diccionario básico de pares clave-valor específico del componente a través de un servicio que un diseñador puede utilizar para almacenar los datos definidos por el usuario.

Espacio de nombres:  System.ComponentModel.Design
Ensamblado:  System (en System.dll)

public interface IDictionaryService

El tipo IDictionaryService expone los siguientes miembros.

  NombreDescripción
Método públicoGetKeyObtiene la clave que corresponde al valor especificado.
Método públicoGetValueObtiene el valor que corresponde a la clave especificada.
Método públicoSetValueEstablece el par clave-valor especificado.
Arriba

Este servicio proporciona una interfaz simple para establecer, recuperar y buscar objetos con claves asociadas.

En el siguiente ejemplo, el control y el diseñador utilizan IDictionaryService para compartir los datos mediante su diccionario de pares clave-valor específico del sitio.


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

namespace IDictionaryServiceControl
{
    // This example control works with the IDictionaryServiceDesigner to demonstrate
    // using the IDictionaryService for storing data provided by a designer, and
    // accessing it from a control. The IDictionaryService provides a Site-specific 
    // key-based dictionary. An IDictionaryServiceDesigner sets an ArrayList of strings 
    // to the dictionary with a "DesignerData" key, and its contents are accessed and
    // displayed once the Update box is clicked at design time.
    [DesignerAttribute(typeof(IDictionaryServiceDesigner), typeof(IDesigner))]
    public class IDictionaryServiceControl : System.Windows.Forms.UserControl
    {
        public ArrayList al;

        public IDictionaryServiceControl()
        {            
            // Initializes the example control.
            al = new ArrayList();
            this.Size = new Size(344, 88);
            this.BackColor = Color.White;
        }

        // Draws the instructions and user interface, and any strings contained 
        // in a local ArrayList.
        protected override void OnPaint(System.Windows.Forms.PaintEventArgs e)
        {
            if( this.DesignMode )
            {
                e.Graphics.DrawString("IDictionaryServiceDesigner Control", new Font(FontFamily.GenericMonospace, 9), new SolidBrush(Color.Blue), 5, 4);                         
                e.Graphics.DrawString("Click the Update box to update display strings", new Font(FontFamily.GenericMonospace, 8), new SolidBrush(Color.DarkGreen), 5, 17);
                e.Graphics.DrawString("from the IDictionaryService.", new Font(FontFamily.GenericMonospace, 8), new SolidBrush(Color.DarkGreen), 5, 29);                 

                e.Graphics.FillRectangle(new SolidBrush(Color.Beige), 270, 7, 60, 10);
                e.Graphics.DrawRectangle(new Pen(new SolidBrush(Color.Black), 1), 270, 7, 60, 10);
                e.Graphics.DrawString("Update", new Font(FontFamily.GenericMonospace, 7), new SolidBrush(Color.Black), 282, 7);

                for( int i=0; i<al.Count; i++ )            
                    e.Graphics.DrawString((string)al[i], new Font(FontFamily.GenericMonospace, 8), new SolidBrush(Color.Black), 5, 44+(i*12));            
            }
        }

        // On mouse down, this method attempts to access the IDictionaryService and 
        // obtain an ArrayList with a key of "DesignerData" in the dictionary.
        // If successful, this ArrayList is set to the local ArrayList.
        protected override void OnMouseDown(System.Windows.Forms.MouseEventArgs e)
        {
            // Attempts to obtain the IDictionaryService using the Control.GetService method.
            IDictionaryService ds = (IDictionaryService)GetService(typeof(IDictionaryService));
            // If the service was obtained...
            if( ds != null )
            {
                // Attempts to retrieve a list with a key of "DesignerData".
                ArrayList list = (ArrayList)ds.GetValue( "DesignerData" );
                // If the list exists, sets the list obtained by the 
                // IDictionaryService to the local list.
                if( list != null )
                    this.al = list;
                this.Refresh();
            }
        }
    }

    // This designer uses the IDictionaryService to store an ArrayList of
    // information strings that the associated control can access and 
    // display. The IDictionaryService creates a new dictionary for each Site.
    public class IDictionaryServiceDesigner : System.Windows.Forms.Design.ControlDesigner
    {
        public IDictionaryServiceDesigner()
        {
        }

        // On designer initialization, this method attempts to obtain 
        // the IDictionaryService, and populates an ArrayList
        // associated with a "DesignerData" key in the dictionary with 
        // designer- and control-related information strings.
        public override void Initialize(System.ComponentModel.IComponent component)
        {
            base.Initialize(component);            
            IDictionaryService ds = (IDictionaryService)component.Site.GetService(typeof(IDictionaryService));
            if( ds != null )
            {
                // If the dictionary service does not contain a 
                // DesignerData key, adds an ArrayList for that key.
                if( ds.GetValue( "DesignerData" ) == null )           
                {
                    ds.SetValue( "DesignerData", new ArrayList() );
                       ds.SetValue( "DesignerData", new ArrayList() );
                }

                // Obtains the ArrayList with the "DesignerData" key 
                // from the dictionary service.
                ArrayList al = (ArrayList)ds.GetValue( "DesignerData" );
                if( al != null )
                {
                    al.Clear();
                    // Populates the array list with designer and 
                    // control information strings.
                    al.Add( "Designer type: "+this.GetType().Name );
                    al.Add( "Control type:  "+this.Control.GetType().Name );
                    al.Add( "Control name:  "+this.Control.Name );                    
                }
            }
        }

        protected override bool GetHitTest(System.Drawing.Point point)
        {
            // Translates the point to client coordinates and passes the 
            // messages to the control while over the click box.
            Point translated = this.Control.PointToClient(point);
            if( translated.X > 269 && translated.X < 331 
                && translated.Y > 7 && translated.Y < 18 )
                return true;
            else
                return base.GetHitTest(point);
        }
    }
}


.NET Framework

Compatible con: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Compatible con: 4, 3.5 SP1

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (no se admite el rol Server Core), Windows Server 2008 R2 (se admite el rol Server Core con SP1 o versiones posteriores; no se admite Itanium)

.NET Framework no admite todas las versiones de todas las plataformas. Para obtener una lista de las versiones compatibles, vea Requisitos de sistema de .NET Framework.

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