IProvideAttributeTable Interface

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;
            }
        }
    }
}