Composite Control and Intellisense support for enum Property

[Pascal]

Hello,

I'm facing the following problem. I'm trying to build a Composite Control that uses Telerik control as child control, I try to create a new Property for this control that can only be Val1, Val2 or Val3.

I've created a enum to list all property values:

public enum MyEnum{Val1,Val2,Val3}

Then I've created a Property in my composite control whose type is MyEnum like this:

public MyEnum? MyControlAttribute
{
    get { return (MyEnum?)ViewState["MyControlAttribute"]; }
    set { ViewState["MyControlAttribute"] = value; }
}

When I build my library and try to use the composite control, Intellisense don't work as needed. I would like to have Intellisense propose Val1, Val2 or Val3 for the attribute. Is that possible?

<ns:MyCompositeControl ID="ccid" runat="server" MyControlAttribute="...." />

I suppose I missed an attribute on the Property MyControlAttribute, but I don't know which one.

Any help would be appreciated.

Thanks.

Pascal