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IPersonalizable Interfaz

Definición

Define las funciones de administración adicionales para la aplicación y extracción del estado de personalización.

public interface class IPersonalizable
public interface IPersonalizable
type IPersonalizable = interface
Public Interface IPersonalizable
Derivado

Ejemplos

En el ejemplo de código siguiente se muestra cómo usar la IPersonalizable interfaz . El ejemplo consta de una página .aspx que hace referencia a un control de elemento web denominado UrlListWebPart. El código siguiente es el archivo .aspx del ejemplo.

<%@ Page Language="C#"  %>
<%@ Register TagPrefix="dict" 
    namespace="Samples.AspNet.CS.Controls" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>IPersonalizable</title>
</head>
<body>
    <form id="form1" runat="server">
    <asp:WebPartManager ID="mgr" runat="server" />
    <div>
    <asp:WebPartZone ID="WebPartZone1" runat="server">
      <ZoneTemplate>
        <dict:urllistwebpart id="listwp1" runat="server"
          title="URL List WebPart" />
      </ZoneTemplate>
    </asp:WebPartZone>
    </div>
    </form>
</body>
</html>
<%@ Page Language="VB"  %>
<%@ Register TagPrefix="dict" 
    namespace="Samples.AspNet.VB.Controls" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>IPersonalizable</title>
</head>
<body>
    <form id="form1" runat="server">
    <asp:WebPartManager ID="mgr" runat="server" />
    <div>
    <asp:WebPartZone ID="WebPartZone1" runat="server">
      <ZoneTemplate>
        <dict:urllistwebpart id="listwp1" runat="server"
          title="URL List WebPart" />
      </ZoneTemplate>
    </asp:WebPartZone>
    </div>
    </form>
</body>
</html>

El código siguiente es el origen del control personalizado WebPart . Este archivo debe colocarse en el directorio App_Code.

namespace Samples.AspNet.CS.Controls
{

    using System;
    using System.Collections;
    using System.ComponentModel;
    using System.Diagnostics;
    using System.Drawing;
    using System.Web;
    using System.Web.UI;
    using System.Security.Permissions;
    using System.Web.UI.WebControls;
    using System.Web.UI.WebControls.WebParts;

    [AspNetHostingPermission(SecurityAction.Demand,
      Level = AspNetHostingPermissionLevel.Minimal)]
    [AspNetHostingPermission(SecurityAction.InheritanceDemand,
      Level = AspNetHostingPermissionLevel.Minimal)]
    public class UrlListWebPart : WebPart, IPersonalizable
    {
        private ArrayList _sharedUrls;
        private ArrayList _userUrls;
        private bool _listDirty;

        private TextBox _nameTextBox;
        private TextBox _urlTextBox;
        private Button _addButton;
        private BulletedList _list;

        protected override void CreateChildControls()
        {
            Label nameLabel = new Label();
            Label urlLabel = new Label();
            LiteralControl breakLiteral1 = new LiteralControl("<br />");
            LiteralControl breakLiteral2 = new LiteralControl("<br />");
            LiteralControl breakLiteral3 = new LiteralControl("<br />");

            _nameTextBox = new TextBox();
            _urlTextBox = new TextBox();
            _addButton = new Button();
            _list = new BulletedList();

            nameLabel.Text = "Name: ";
            urlLabel.Text = "URL: ";
            _nameTextBox.ID = "nameTextBox";
            _urlTextBox.ID = "urlTextBox";
            _addButton.Text = "Add";
            _addButton.ID = "addButton";
            _addButton.Click += new EventHandler(this.OnClickAddButton);
            _list.DisplayMode = BulletedListDisplayMode.HyperLink;
            _list.ID = "list";

            Controls.Add(nameLabel);
            Controls.Add(_nameTextBox);
            Controls.Add(breakLiteral1);

            Controls.Add(urlLabel);
            Controls.Add(_urlTextBox);
            Controls.Add(breakLiteral2);

            Controls.Add(_addButton);
            Controls.Add(breakLiteral3);

            Controls.Add(_list);
        }

        private void OnClickAddButton(object sender, EventArgs e)
        {
            string name = _nameTextBox.Text.Trim();
            string url = _urlTextBox.Text.Trim();

            Pair p = new Pair(name, url);
            if (WebPartManager.Personalization.Scope == PersonalizationScope.Shared)
            {
                _sharedUrls ??= new ArrayList();
                _sharedUrls.Add(p);
            }
            else
            {
                _userUrls ??= new ArrayList();
                _userUrls.Add(p);
            }

            OnUrlAdded();
        }

        protected virtual void OnUrlAdded()
        {
            _listDirty = true;
            ChildControlsCreated = false;
        }

        protected override void RenderContents(HtmlTextWriter writer)
        {
            if (_sharedUrls != null)
            {
                foreach (Pair p in _sharedUrls)
                {
                    _list.Items.Add(new ListItem((string)p.First, (string)p.Second));
                }
            }
            if (_userUrls != null)
            {
                foreach (Pair p in _userUrls)
                {
                    _list.Items.Add(new ListItem((string)p.First, (string)p.Second));
                }
            }

            base.RenderContents(writer);
        }

        public virtual bool IsDirty
        {
            get
            {
                return _listDirty;
            }
        }
        public new virtual void Load(PersonalizationDictionary state)
        {
            if (state != null)
            {
                PersonalizationEntry sharedUrlsEntry = state["sharedUrls"];
                if (sharedUrlsEntry != null)
                {
                    _sharedUrls = (ArrayList)sharedUrlsEntry.Value;
                }

                PersonalizationEntry userUrlsEntry = state["userUrls"];
                if (userUrlsEntry != null)
                {
                    _userUrls = (ArrayList)userUrlsEntry.Value;
                }
            }
        }

        public virtual void Save(PersonalizationDictionary state)
        {
            if ((_sharedUrls != null) && (_sharedUrls.Count != 0))
            {
                state["sharedUrls"] = new PersonalizationEntry(_sharedUrls, PersonalizationScope.Shared);
            }
            if ((_userUrls != null) && (_userUrls.Count != 0))
            {
                state["userUrls"] = new PersonalizationEntry(_userUrls, PersonalizationScope.User);
            }
        }
    }
}

Imports System.Collections
Imports System.ComponentModel
Imports System.Diagnostics
Imports System.Drawing
Imports System.Web
Imports System.Web.UI
Imports System.Security.Permissions
Imports System.Web.UI.WebControls
Imports System.Web.UI.WebControls.WebParts

Namespace Samples.AspNet.VB.Controls

  <AspNetHostingPermission(SecurityAction.Demand, _
    Level:=AspNetHostingPermissionLevel.Minimal)> _
  <AspNetHostingPermission(SecurityAction.InheritanceDemand, _
    Level:=AspNetHostingPermissionLevel.Minimal)> _
  Public Class UrlListWebPart
      Inherits WebPart
      Implements IPersonalizable
      Private _sharedUrls As ArrayList
      Private _userUrls As ArrayList
      Private _listDirty As Boolean

      Private _nameTextBox As TextBox
      Private _urlTextBox As TextBox
      Private _addButton As Button
      Private _list As BulletedList


      Protected Overrides Sub CreateChildControls()
          Dim nameLabel As New Label()
          Dim urlLabel As New Label()
          Dim breakLiteral1 As New LiteralControl("<br />")
          Dim breakLiteral2 As New LiteralControl("<br />")
          Dim breakLiteral3 As New LiteralControl("<br />")

          _nameTextBox = New TextBox()
          _urlTextBox = New TextBox()
          _addButton = New Button()
          _list = New BulletedList()

          nameLabel.Text = "Name: "
          urlLabel.Text = "URL: "
          _nameTextBox.ID = "nameTextBox"
          _urlTextBox.ID = "urlTextBox"
          _addButton.Text = "Add"
          _addButton.ID = "addButton"
          AddHandler _addButton.Click, AddressOf Me.OnClickAddButton
          _list.DisplayMode = BulletedListDisplayMode.HyperLink
          _list.ID = "list"

          Controls.Add(nameLabel)
          Controls.Add(_nameTextBox)
          Controls.Add(breakLiteral1)

          Controls.Add(urlLabel)
          Controls.Add(_urlTextBox)
          Controls.Add(breakLiteral2)

          Controls.Add(_addButton)
          Controls.Add(breakLiteral3)

          Controls.Add(_list)

      End Sub


      Private Sub OnClickAddButton(ByVal sender As Object, ByVal e As EventArgs)
          Dim name As String = _nameTextBox.Text.Trim()
          Dim url As String = _urlTextBox.Text.Trim()

          Dim p As New Pair(name, url)
          If WebPartManager.Personalization.Scope = PersonalizationScope.Shared Then
              If _sharedUrls Is Nothing Then
                  _sharedUrls = New ArrayList()
              End If
              _sharedUrls.Add(p)
          Else
              If _userUrls Is Nothing Then
                  _userUrls = New ArrayList()
              End If
              _userUrls.Add(p)
          End If

          OnUrlAdded()

      End Sub


      Protected Overridable Sub OnUrlAdded()
          _listDirty = True
          ChildControlsCreated = False

      End Sub


      Protected Overrides Sub RenderContents(ByVal writer As HtmlTextWriter)
          If Not (_sharedUrls Is Nothing) Then
              Dim p As Pair
              For Each p In _sharedUrls
                  _list.Items.Add(New ListItem(CStr(p.First), CStr(p.Second)))
              Next p
          End If
          If Not (_userUrls Is Nothing) Then
              Dim p As Pair
              For Each p In _userUrls
                  _list.Items.Add(New ListItem(CStr(p.First), CStr(p.Second)))
              Next p
          End If

          MyBase.RenderContents(writer)

      End Sub


      Public Overridable ReadOnly Property IsDirty() As Boolean _
        Implements IPersonalizable.IsDirty
          Get
              Return _listDirty
          End Get
      End Property

      Public Overridable Shadows Sub Load(ByVal state As PersonalizationDictionary) _
        Implements IPersonalizable.Load
          If Not (state Is Nothing) Then
              Dim sharedUrlsEntry As PersonalizationEntry = state("sharedUrls")
              If Not (sharedUrlsEntry Is Nothing) Then
                  _sharedUrls = CType(sharedUrlsEntry.Value, ArrayList)
              End If

              Dim userUrlsEntry As PersonalizationEntry = state("userUrls")
              If Not (userUrlsEntry Is Nothing) Then
                  _userUrls = CType(userUrlsEntry.Value, ArrayList)
              End If
          End If

      End Sub

      Public Overridable Sub Save(ByVal state As PersonalizationDictionary) _
        Implements IPersonalizable.Save
          If Not (_sharedUrls Is Nothing) AndAlso _sharedUrls.Count <> 0 Then
              state("sharedUrls") = New PersonalizationEntry(_sharedUrls, PersonalizationScope.Shared)
          End If
          If Not (_userUrls Is Nothing) AndAlso _userUrls.Count <> 0 Then
              state("userUrls") = New PersonalizationEntry(_userUrls, PersonalizationScope.User)
          End If

      End Sub
  End Class


End Namespace

Cargue la página en un explorador. Escriba un nombre para representar una dirección URL y agregue una dirección URL real a partir http://de y haga clic en el botón Agregar para agregar la dirección URL.

Comentarios

Además de usar el Personalizable atributo en las propiedades de control, un control también puede implementar IPersonalizable para funcionalidades de administración adicionales para la aplicación y extracción del estado de personalización. Por ejemplo, los controles que necesitan administrar la información de estado privado deben implementar esta interfaz. Los controles que acceden a datos personalizados a través de mecanismos complejos, como soluciones de caché personalizadas, persistencia de datos en sistemas centrales o servicios web XML, también deben implementar esta interfaz.

Importante

No debe agregar tipos basados en las clases definidas en el directorio App_Code y, a continuación, depender del mecanismo de serialización binaria predeterminado. los artefactos basados en App_Code no son serializables de forma binaria de forma coherente debido al hecho de que pueden cambiar sus nombres de ensamblado en momentos aleatorios.

Propiedades

IsDirty

Obtiene un valor que indica si han cambiado los datos personalizados que administra un control.

Métodos

Load(PersonalizationDictionary)

Carga los datos personalizados en un control.

Save(PersonalizationDictionary)

Guarda propiedades personalizadas e información del estado interno en el objeto PersonalizationDictionary del control.

Se aplica a