Another question regarding your code doc (or anyone else who's had
success with his code):

I've written public virtual properties for entities such as a label's text, button text, etc; yet I'm unable to change those properties in the VS.NET designer; it ignores changes as if the set{} code of the property doesn't exist. Real simple example:
public virtual string lblHeaderText
        {
            get
            {
                EnsureChildControls();
                return (lblHeader.Text.Length <=0) ? "Please enter the phone numbers to be added to the conversion list:" : lblHeader.Text;
            }
            set
            {
                EnsureChildControls();
                lblHeader.Text = value;
            }
        }

when using the control in design time it ignores changes to this property.

Ahh, it looks as exposing TextBoxes and their Text property behaved a bit differently. I ended up creating a private string member of the composite control class and having it return its value/set its value for the property. I also checked the current value of the textbox in the property and set its value to the private string member.

**pardon my code example above, the issue revolved around exposing TextBox.Text values**