C#

////////////////////////////////////////AddressCollectionEditor<br />
    public class AddressCollectionEditor : CollectionEditor<br />
    {<br />
        public AddressCollectionEditor(Type type)<br />
            : base(type){}<br />
<br />
        protected override bool CanSelectMultipleInstances(){return<br />
false;}<br />
<br />
        protected override Type CreateCollectionItemType(){return<br />
typeof(Address);}<br />
    }<br />
<br />
////////////////////////////////////////AddressTypeConverter<br />
[Serializable]<br />
    public class AddressTypeConverter : TypeConverter<br />
    {<br />
        public override bool CanConvertTo(ITypeDescriptorContext<br />
context, Type destinationType)<br />
        {<br />
            if (destinationType == typeof(InstanceDescriptor))<br />
                return true;<br />
<br />
            return base.CanConvertTo(context, destinationType);<br />
        }<br />
<br />
        public override object ConvertTo(ITypeDescriptorContext<br />
context, System.Globalization.CultureInfo culture, object value, Type<br />
destinationType)<br />
        {<br />
            if (destinationType == typeof(InstanceDescriptor))<br />
            {<br />
                Address addr = value as Address;<br />
                if (addr == null)<br />
                    return new<br />
InstanceDescriptor(typeof(Address).GetConstructor(System.Type.EmptyTypes),<br />
null);<br />
<br />
                return new<br />
InstanceDescriptor(typeof(Address).GetConstructor(new Type[] {<br />
typeof(string), typeof(string), typeof(string), typeof(string),<br />
typeof(string), typeof(string), typeof(string) }),<br />
<br />
     new string[] { addr.Type, addr.Street1, addr.Street2, addr.City,<br />
addr.StateProvince, addr.ZipPostalCode, addr.CountryRegion });<br />
            }<br />
<br />
            return base.ConvertTo(context, culture, value,<br />
destinationType);<br />
        }<br />
    }<br />
<br />
////////////////////////////////////////AddressCtrl<br />
public partial class AddressCtrl : UserControl<br />
{<br />
  //removed for clarity....<br />
<br />
        [Category("Misc"), Description("Get a collection of<br />
addresses.")]<br />
        [Editor(typeof(AddressCollectionEditor), typeof(UITypeEditor))]<br />
<br />
[DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]<br />
        public AddressCollection Addresses<br />
        {<br />
            get { return m_coll; }<br />
        }<br />
<br />
}<br />
<br />
////////////////////////////////////////Address<br />
    [Serializable]<br />
    [TypeConverter(typeof(AddressTypeConverter))]<br />
    public class Address : ICloneable<br />
    {<br />
         //removed for clarity....<br />
<br />
        private string m_strType;<br />
        private string m_strStreet1, m_strStreet2;<br />
        private string m_strCity, m_strStateProvince;<br />
        private string m_strZipPostalCode, m_strCountryRegion;<br />
<br />
        public Address()<br />
            : this("Unknown", string.Empty, string.Empty, string.Empty,<br />
string.Empty, string.Empty, string.Empty)<br />
        {<br />
        }<br />
<br />
        public Address(string strType, string strStreet1, string<br />
strStreet2, string strCity, string strStateProvince, string<br />
strZipPostalCode, string strCountryRegion)<br />
        {<br />
        }<br />
<br />
         //All the member variables are exposed to the outer world<br />
through some<br />
         //accessors (get/set)....<br />
    }

<br />
this.addressCtrl1.Addresses.AddRange(new Address[] {<br />
            new Address("Business", "", "", "", "", "", ""),<br />
            new Address("Home", "", "", "", "", "", ""),<br />
            new Address("Shipping", "", "", "", "", "", ""),<br />
            new Address("Billing", "", "", "", "", "", "")});<br />

<br />
this.addressCtrl1.Addresses.AddRange(new Address[] {<br />
            ((Address)(new Address())),<br />
            ((Address)(new Address())),<br />
            ((Address)(new Address())),<br />
            ((Address)(new Address()))});<br />