'Declaration
<DefaultMemberAttribute("Item")> <DebuggerDisplayAttribute("Count = {Count}")> <DebuggerTypeProxyAttribute(System.Collections.Generic.Mscorlib_CollectionDebugView`1)> Public Class DataGridColumnCollection Inherits System.Collections.ObjectModel.Collection(Of DataGridColumn)
[DefaultMember("Item")] [DebuggerDisplay("Count = {Count}")] [DebuggerTypeProxy(System.Collections.Generic.Mscorlib_CollectionDebugView`1)] public class DataGridColumnCollection : System.Collections.ObjectModel.Collection<DataGridColumn>