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/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / xsp / System / Web / UI / WebControls / DataKeyArray.cs / 1305376 / DataKeyArray.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Web.UI.WebControls { using System; using System.Collections; ////// public sealed class DataKeyArray : ICollection, IStateManager { private ArrayList _keys; private bool _isTracking; ////// public DataKeyArray(ArrayList keys) { this._keys = keys; } ///Initializes a new instance of the ///class. /// public int Count { get { return _keys.Count; } } ///Gets the number of objects in the collection. This property is read-only. ////// public bool IsReadOnly { get { return false; } } ///Gets the value that specifies whether items in the ///can be /// modified. This property is read-only. /// public bool IsSynchronized { get { return false; } } ///Gets a value that indicates whether the ///is /// thread-safe. This property is read-only. /// public object SyncRoot { get { return this; } } ///Gets the object used to synchronize access to the collection. This property is read-only. ////// public DataKey this[int index] { get { return _keys[index] as DataKey; } } ///Gets a ///at the specified index in the collection. This property is read-only. /// public void CopyTo(DataKey[] array, int index) { ((ICollection)this).CopyTo(array, index); } ///Copies the contents of the entire collection into an ///appending at /// the specified index of the . void ICollection.CopyTo(Array array, int index) { for (IEnumerator e = this.GetEnumerator(); e.MoveNext();) array.SetValue(e.Current, index++); } /// /// public IEnumerator GetEnumerator() { return _keys.GetEnumerator(); } #region IStateManager implementation ///Creates an enumerator for the ///used to iterate /// through the collection. bool IStateManager.IsTrackingViewState { get { return _isTracking; } } /// void IStateManager.LoadViewState(object state) { if (state != null) { object[] keysState = (object[])state; for (int i = 0; i < keysState.Length; i++) { if (keysState[i] != null) { ((IStateManager)_keys[i]).LoadViewState(keysState[i]); } } } } /// object IStateManager.SaveViewState() { int keyCount = _keys.Count; object[] keysState = new object[keyCount]; bool savedState = false; for (int i = 0; i < keyCount; i++) { keysState[i] = ((IStateManager)_keys[i]).SaveViewState(); if (keysState[i] != null) savedState = true; } return savedState ? keysState : null; } /// void IStateManager.TrackViewState() { _isTracking = true; int keyCount = _keys.Count; for (int i = 0; i < keyCount; i++) { ((IStateManager)_keys[i]).TrackViewState(); } } #endregion } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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