public sealed class ColumnCollection : ColumnList, 
	ICollection, IEnumerable

Public NotInheritable Class ColumnCollection
	Inherits ColumnList
	Implements ICollection, IEnumerable

public ref class ColumnCollection sealed : public ColumnList, 
	ICollection, IEnumerable

[<SealedAttribute>]
type ColumnCollection =  
    class
        inherit ColumnList
        interface ICollection
        interface IEnumerable
    end