/// <summary>
 /// Adds the elements of another SelectColumnCollection to the end of this SelectColumnCollection.
 /// </summary>
 /// <param name="items">
 /// The SelectColumnCollection whose elements are to be added to the end of this SelectColumnCollection.
 /// </param>
 public virtual void AddRange(SelectColumnCollection items)
 {
     foreach (SelectColumn item in items)
     {
         this.List.Add(item);
     }
 }
 /// <summary>
 /// Initializes a new instance of the SelectColumnCollection class, containing elements
 /// copied from another instance of SelectColumnCollection
 /// </summary>
 /// <param name="items">
 /// The SelectColumnCollection whose elements are to be added to the new SelectColumnCollection.
 /// </param>
 public SelectColumnCollection(SelectColumnCollection items)
 {
     this.AddRange(items);
 }
 /// <summary>
 ///
 /// </summary>
 /// <param name="collection"></param>
 public Enumerator(SelectColumnCollection collection)
 {
     this.wrapped = ((CollectionBase)collection).GetEnumerator();
 }