"Linda Liu[MSFT]" <v-lliu@online.microsoft.com> wrote in message
news:7F1AjiJlIHA.9932@TK2MSFTNGHUB02.phx.gbl...
> Hi Patricio,
>
> Based on my understanding, you have a user control that contains a public
> property of a custom type. When you drag the user control on a form, the
> public custom type property is shown in the Properties window but the sub
> properties of the custom type are not shown under the custom type
> property,
> ie. the custom type property is not expandable. If I'm off base, please
> feel free to let me know.
>
> You need to apply the ExpandableObjectConverter to the custom type to make
> the custom type property expandable. For example:
>
> [TypeConverter(typeof(ExpandableObjectConverter))]
> public class Person
> {
> private string id;
> private string name;
> public string ID
> {
> get { return id; }
> set { id = value; }
> }
> public string Name
> {
> get { return name; }
> set { name = value; }
> }
> }
>
> In addition, you must expose a ShouldSerializePropertyName method that
> returns a bool in the user control to enable serialization of properties
> of
> complex types. Internally, the Windows Forms Designer looks for a method
> named ShouldSerializePropertyName to ask whether the property should be
> serialized. From the Windows Forms Designer's point of view, it doesn't
> matter whether your ShouldSerializePropertyName is public or private, but
> choosing private removes it from client visibility.
>
> For example:
> public partial class UserControl1 : UserControl
> {
> public UserControl1()
> {
> InitializeComponent();
> }
> private Person p = new Person();
> public Person P
> {
> get { return p; }
> set { p = value; }
> }
> bool ShouldSerializeP()
> {
> return true;
> }
> }
>
> Hope this helps.
> If you have any question, please feel free to let me know.
>
> Sincerely,
> Linda Liu
> Microsoft Online Community Support
>
> Delighting our customers is our #1 priority. We welcome your comments and
> suggestions about how we can improve the support we provide to you. Please
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> msdnmg@microsoft.com.
>
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