Code:
/ FXUpdate3074 / FXUpdate3074 / 1.1 / untmp / whidbey / QFE / ndp / fx / src / xsp / System / Web / UI / WebControls / DataKey.cs / 1 / DataKey.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Web.UI.WebControls { using System; using System.Collections; using System.Collections.Specialized; using System.Security.Permissions; ////// [AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)] [AspNetHostingPermission(SecurityAction.InheritanceDemand, Level=AspNetHostingPermissionLevel.Minimal)] public class DataKey : IStateManager { private IOrderedDictionary _keyTable; private bool _isTracking; private string[] _keyNames; public DataKey(IOrderedDictionary keyTable) { _keyTable = keyTable; } public DataKey(IOrderedDictionary keyTable, string[] keyNames) : this(keyTable) { _keyNames = keyNames; } ////// Inheritable overridable implementation of IsTrackingViewState /// protected virtual bool IsTrackingViewState { get { return _isTracking; } } public virtual object this[int index] { get { return _keyTable[index]; } } public virtual object this[string name] { get { return _keyTable[name]; } } public virtual object Value { get { if (_keyTable.Count > 0) { return _keyTable[0]; } return null; } } public virtual IOrderedDictionary Values { get { if (_keyTable is OrderedDictionary) { return ((OrderedDictionary)_keyTable).AsReadOnly(); } // don't return the actual table because we don't want the user to mess with it. if (_keyTable is ICloneable) { return (IOrderedDictionary)((ICloneable)_keyTable).Clone(); } OrderedDictionary table = new OrderedDictionary(); foreach (DictionaryEntry entry in _keyTable) { table.Add(entry.Key, entry.Value); } return table.AsReadOnly(); } } ////// Inheritable overridable implementation of LoadViewState /// protected virtual void LoadViewState(object state) { if (state != null) { if (_keyNames != null) { object [] myState = (object [])state; // if we have key names, then we only stored values. if (myState[0] != null) { for (int i = 0; i < myState.Length && i < _keyNames.Length; i++) { _keyTable.Add(_keyNames[i], myState[i]); } } } else { if (state != null) { ArrayList stateArrayList = state as ArrayList; if (stateArrayList == null) { throw new HttpException(SR.GetString(SR.ViewState_InvalidViewState)); } OrderedDictionaryStateHelper.LoadViewState(_keyTable, stateArrayList); } } } } ////// Inheritable overridable implementation of SaveViewState /// protected virtual object SaveViewState() { int count = _keyTable.Count; if (count > 0) { object myState; if (_keyNames != null) { // if we have key names, then we only have to store values. myState = new object[count]; for (int i = 0; i < count; i++) { ((object[])myState)[i] = _keyTable[i]; } } else { myState = OrderedDictionaryStateHelper.SaveViewState(_keyTable); } return myState; } return null; } ////// Inheritable overridable implementation of TrackViewState /// protected virtual void TrackViewState() { _isTracking = true; } #region IStateManager implementation ///bool IStateManager.IsTrackingViewState { get { return IsTrackingViewState; } } /// void IStateManager.LoadViewState(object state) { LoadViewState(state); } /// object IStateManager.SaveViewState() { return SaveViewState(); } /// void IStateManager.TrackViewState() { TrackViewState(); } #endregion } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
Link Menu

This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- HostVisual.cs
- ItemsControl.cs
- ControlValuePropertyAttribute.cs
- XmlNodeComparer.cs
- DeclaredTypeElement.cs
- DataControlFieldCollection.cs
- ActionFrame.cs
- Binding.cs
- SchemaEntity.cs
- DataObjectPastingEventArgs.cs
- WebEventCodes.cs
- COSERVERINFO.cs
- ExtractedStateEntry.cs
- ExpressionTable.cs
- Tuple.cs
- ClientClassGenerator.cs
- RuntimeHelpers.cs
- OdbcUtils.cs
- TypeEnumerableViewSchema.cs
- ZipIOZip64EndOfCentralDirectoryLocatorBlock.cs
- SQLChars.cs
- XPathNavigatorReader.cs
- DetailsViewRowCollection.cs
- DataContractJsonSerializer.cs
- QilPatternFactory.cs
- WebPartTransformerCollection.cs
- DbConnectionPoolGroupProviderInfo.cs
- ResourceReader.cs
- RegexCharClass.cs
- ConnectionStringSettingsCollection.cs
- QueryOutputWriter.cs
- RetrieveVirtualItemEventArgs.cs
- ICollection.cs
- AppPool.cs
- TraceHwndHost.cs
- Matrix3D.cs
- ReferencedType.cs
- ConstructorBuilder.cs
- SoapEnumAttribute.cs
- DesignerActionItemCollection.cs
- LogManagementAsyncResult.cs
- PaintValueEventArgs.cs
- TdsParserStaticMethods.cs
- AssociationEndMember.cs
- SchemaMapping.cs
- Graphics.cs
- DataSpaceManager.cs
- TrustManagerPromptUI.cs
- NamespaceEmitter.cs
- MetadataCollection.cs
- SafeLocalMemHandle.cs
- CodeTypeDeclarationCollection.cs
- ImageIndexConverter.cs
- FreezableCollection.cs
- HostExecutionContextManager.cs
- BitArray.cs
- ActivityCollectionMarkupSerializer.cs
- CompModSwitches.cs
- KeyGestureConverter.cs
- XmlBaseWriter.cs
- Touch.cs
- QueryReaderSettings.cs
- PrintPreviewDialog.cs
- XPathDescendantIterator.cs
- TypeKeyValue.cs
- TriggerActionCollection.cs
- EmptyEnumerator.cs
- ObfuscateAssemblyAttribute.cs
- BaseWebProxyFinder.cs
- PseudoWebRequest.cs
- ControllableStoryboardAction.cs
- TemplateControlParser.cs
- PageAsyncTaskManager.cs
- StickyNoteContentControl.cs
- ProcessThread.cs
- Label.cs
- DateTimeValueSerializerContext.cs
- RowUpdatingEventArgs.cs
- ExpressionParser.cs
- AddInActivator.cs
- Parsers.cs
- BufferedReadStream.cs
- SettingsSection.cs
- ServicesSection.cs
- XmlNode.cs
- SchemaContext.cs
- MenuItemBinding.cs
- EqualityComparer.cs
- CheckBox.cs
- ApplicationFileParser.cs
- HandleCollector.cs
- ConfigPathUtility.cs
- DBSchemaRow.cs
- DataGridViewDataErrorEventArgs.cs
- Metadata.cs
- DbConnectionPoolIdentity.cs
- UriScheme.cs
- XmlSchemaObjectCollection.cs
- ThreadSafeList.cs
- KeySpline.cs