Proprietà IProvideAttributeTable.AttributeTable

Articolo
08/11/2011

Ottiene la tabella degli attributi fornita dalla classe.

Spazio dei nomi: Microsoft.Windows.Design.Metadata
Assembly: Microsoft.Windows.Design.Extensibility (in Microsoft.Windows.Design.Extensibility.dll)

Sintassi

'Dichiarazione
ReadOnly Property AttributeTable As AttributeTable
    Get

AttributeTable AttributeTable { get; }

property AttributeTable^ AttributeTable {
    AttributeTable^ get ();
}

abstract AttributeTable : AttributeTable

function get AttributeTable () : AttributeTable

Valore proprietà

Tipo: Microsoft.Windows.Design.Metadata.AttributeTable
Oggetto AttributeTable fornito dalla classe.

Note

Utilizzare la classe AttributeTable per associare attributi di metadati Design-Time a tipi WPF (Windows Presentation Foundation).

Esempi

Nell'esempio di codice seguente viene illustrato come creare e popolare una tabella di attributi. Per ulteriori informazioni, vedere Procedura dettagliata: creazione di uno strumento decorativo visuale in fase di progettazione.

Imports System
Imports System.Collections
Imports System.Collections.Generic
Imports System.ComponentModel
Imports System.Reflection
Imports System.Text
Imports System.Windows.Media
Imports System.Windows.Controls
Imports System.Windows

Imports Microsoft.Windows.Design
Imports Microsoft.Windows.Design.Features
Imports Microsoft.Windows.Design.Metadata

' The ProvideMetadata assembly-level attribute indicates to designers
' that this assembly contains a class that provides an attribute table. 
<Assembly: ProvideMetadata(GetType(CustomControlLibrary.VisualStudio.Design.Metadata))> 

' Container for any general design-time metadata to initialize.
' Designers look for a type in the design-time assembly that 
' implements IProvideAttributeTable. If found, designers instantiate
' this class and access its AttributeTable property automatically.
Friend Class Metadata
    Implements IProvideAttributeTable

    ' Accessed by the designer to register any design-time metadata.
    Public ReadOnly Property AttributeTable() As AttributeTable _
        Implements IProvideAttributeTable.AttributeTable
        Get
            Dim builder As New AttributeTableBuilder()

            ' Apply the ReadOnlyAttribute to the Background property 
            ' of the Button class.
            builder.AddCustomAttributes(GetType(Button), "Background", New ReadOnlyAttribute(True))

            Dim attributes As AttributeTable = builder.CreateTable()

            Dim hasCustomAttributes As Boolean = attributes.ContainsAttributes(GetType(Button))

            Dim types As IEnumerable(Of Type) = attributes.AttributedTypes

            ' The following code shows how to retrieve custom attributes
            ' using the GetCustomAttributes method overloads.
            Dim attrs0 As IEnumerable = attributes.GetCustomAttributes(GetType(Button))

            Dim attrs1 As IEnumerable = attributes.GetCustomAttributes(GetType(Button), "Background")

            Return attributes
        End Get
    End Property
End Class

using System;
using System.Collections;
using System.Collections.Generic;
using System.ComponentModel;
using System.Reflection;
using System.Text;
using System.Windows.Media;
using System.Windows.Controls;
using System.Windows;

using Microsoft.Windows.Design.Features;
using Microsoft.Windows.Design.Metadata;

// The ProvideMetadata assembly-level attribute indicates to designers
// that this assembly contains a class that provides an attribute table. 
[assembly: ProvideMetadata(typeof(CustomControlLibrary.VisualStudio.Design.Metadata))]
namespace CustomControlLibrary.VisualStudio.Design
{
    // Container for any general design-time metadata to initialize.
    // Designers look for a type in the design-time assembly that 
    // implements IProvideAttributeTable. If found, designers instantiate 
    // this class and access its AttributeTable property automatically.
    internal class Metadata : IProvideAttributeTable
    {
        // Accessed by the designer to register any design-time metadata.
        public AttributeTable AttributeTable
        {
            get
            {
                AttributeTableBuilder builder = new AttributeTableBuilder();

                // Apply the ReadOnlyAttribute to the Background property 
                // of the Button class.
                builder.AddCustomAttributes(
                    typeof(Button),
                    "Background",
                    new ReadOnlyAttribute(true));

                AttributeTable attributes = builder.CreateTable();

                bool hasCustomAttributes = attributes.ContainsAttributes(typeof(Button));

                IEnumerable<Type> types = attributes.AttributedTypes;

                // The following code shows how to retrieve custom attributes
                // using the GetCustomAttributes method overloads.
                IEnumerable attrs0 = attributes.GetCustomAttributes(typeof(Button));

                IEnumerable attrs1 = attributes.GetCustomAttributes(
                    typeof(Button),
                    "Background");

                return attributes;
            }
        }
    }
}

Sicurezza di .NET Framework

Attendibilità totale per il chiamante immediato. Impossibile utilizzare questo membro in codice parzialmente attendibile. Per ulteriori informazioni, vedere Utilizzo di librerie da codice parzialmente attendibile.