/// <summary>
/// Attach the control to a specified document's control collection using a specified process.
/// </summary>
/// <param name="collection">The control collection to hold the control.</param>
/// <param name="range">The location of the control.</param>
/// <param name="width">The width of the control.</param>
/// <param name="height">The height of the control.</param>
/// <param name="shape">The control's inline shape object in the document</param>
/// <returns>The component of the attached control.</returns>
protected override Control Attach(ControlCollection collection, Word.Range range, float width, float height, out Word.InlineShape shape)
{
//adds a panel to document
Panel control = new Panel();
ControlSite controlSite = collection.AddControl(control, range, width, height, ObjectId);
shape = controlSite.InlineShape;
//if there is no list item in the item collection then attach a new list box to document
if (Items.Count == 0)
{
CreateDefaultTemplateItems();
RenderItems(control, _tempItems);
}
else
{
RenderItems(control, Items, false);
}
Items.TemplateItemsChanged += new EventHandler(Items_TemplateItemsChanged);
return(control);
}