internal sealed override ControlCollection <TControl> CreateControlCollection <TControl>(IElementContainer elementContainer)
{
var elementCollection = elementContainer.ElementsOfType <TElement>().Filter(ElementConstraint);
return(ControlCollection <TControl> .CreateControlCollection(elementCollection));
}
/// <summary>
/// Wraps all elements in the collection as controls of a particular type.
/// </summary>
/// <typeparam name="TControl">The <see cref="Control{TElement}" /> subclass</typeparam>
/// <returns>The collection of controls</returns>
public virtual ControlCollection <TControl> As <TControl>()
where TControl : Control, new()
{
return(ControlCollection <TControl> .CreateControlCollection(this));
}