//
// System.Data.InternalDataCollectionBase.cs
//
// Base class for:
// DataRowCollection
// DataColumnCollection
// DataTableCollection
// DataRelationCollection
// DataConstraintCollection
//
// Author:
// Daniel Morgan <danmorg@sc.rr.com>
// Tim Coleman <tim@timcoleman.com>
//
// (C) Copyright 2002 Daniel Morgan
// (C) Copyright 2002 Tim Coleman
//
//
// Copyright (C) 2004 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System;
using System.Collections;
using System.ComponentModel;
namespace System.Data{
/// <summary>
/// Base class for System.Data collection classes
/// that are used within a DataTable object
/// to represent a collection of
/// relations, tables, rows, columns, and constraints
/// </summary>
public class InternalDataCollectionBase : ICollection, IEnumerable {
#region Fields
private ArrayList list = null;
private bool readOnly = false;
private bool synchronized = false;
#endregion
#region Constructors
public InternalDataCollectionBase ()
{
list = new ArrayList();
}
#endregion
#region Properties
/// <summary>
/// Gets the total number of elements in a collection.
/// </summary>
[Browsable (false)]
public virtual int Count {
get { return list.Count; }
}
/// <summary>
/// Gets a value indicating whether the InternalDataCollectionBase is read-only.
/// </summary>
[Browsable (false)]
public bool IsReadOnly {
get { return readOnly; }
}
/// <summary>
/// Gets a value indicating whether the InternalDataCollectionBase is synchronized.
/// </summary>
[Browsable (false)]
public bool IsSynchronized {
get { return synchronized; }
}
/// <summary>
/// Gets the items of the collection as a list.
/// </summary>
protected virtual ArrayList List {
get { return list; }
}
/// <summary>
/// Gets an object that can be used to synchronize the collection.
/// </summary>
[Browsable (false)]
public object SyncRoot {
get { return this; }
}
#endregion
#region Methods
/// <summary>
/// Copies all the elements in the current InternalDataCollectionBase to a one-
/// dimensional Array, starting at the specified InternalDataCollectionBase index.
/// </summary>
public
#if NET_2_0
virtual
#endif
void CopyTo (Array ar, int index)
{
list.CopyTo (ar, index);
}
/// <summary>
/// Gets an IEnumerator for the collection.
/// </summary>
public
#if NET_2_0
virtual
#endif
IEnumerator GetEnumerator ()
{
return list.GetEnumerator ();
}
internal Array ToArray (Type type)
{
return list.ToArray (type);
}
#endregion
}
}
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