Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Framework / System / Windows / Data / DataChangedEventManager.cs / 1305600 / DataChangedEventManager.cs
//---------------------------------------------------------------------------- // //// Copyright (C) Microsoft Corporation. All rights reserved. // // // Description: Manager for the DataChanged event in the "weak event listener" // pattern. See WeakEventTable.cs for an overview. // //--------------------------------------------------------------------------- using System; using System.Windows; // WeakEventManager namespace System.Windows.Data { ////// Manager for the DataSourceProvider.DataChanged event. /// public class DataChangedEventManager : WeakEventManager { #region Constructors // // Constructors // private DataChangedEventManager() { } #endregion Constructors #region Public Methods // // Public Methods // ////// Add a listener to the given source's event. /// public static void AddListener(DataSourceProvider source, IWeakEventListener listener) { if (source == null) throw new ArgumentNullException("source"); if (listener == null) throw new ArgumentNullException("listener"); CurrentManager.ProtectedAddListener(source, listener); } ////// Remove a listener to the given source's event. /// public static void RemoveListener(DataSourceProvider source, IWeakEventListener listener) { /* for app-compat, allow RemoveListener(null, x) - it's a no-op (see Dev10 796788) if (source == null) throw new ArgumentNullException("source"); */ if (listener == null) throw new ArgumentNullException("listener"); CurrentManager.ProtectedRemoveListener(source, listener); } #endregion Public Methods #region Protected Methods // // Protected Methods // ////// Listen to the given source for the event. /// protected override void StartListening(object source) { DataSourceProvider typedSource = (DataSourceProvider)source; typedSource.DataChanged += new EventHandler(OnDataChanged); } ////// Stop listening to the given source for the event. /// protected override void StopListening(object source) { DataSourceProvider typedSource = (DataSourceProvider)source; typedSource.DataChanged -= new EventHandler(OnDataChanged); } #endregion Protected Methods #region Private Properties // // Private Properties // // get the event manager for the current thread private static DataChangedEventManager CurrentManager { get { Type managerType = typeof(DataChangedEventManager); DataChangedEventManager manager = (DataChangedEventManager)GetCurrentManager(managerType); // at first use, create and register a new manager if (manager == null) { manager = new DataChangedEventManager(); SetCurrentManager(managerType, manager); } return manager; } } #endregion Private Properties #region Private Methods // // Private Methods // // event handler for DataChanged event private void OnDataChanged(object sender, EventArgs args) { DeliverEvent(sender, args); } #endregion Private Methods } } // 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
- CompleteWizardStep.cs
- SqlDataAdapter.cs
- TimeStampChecker.cs
- StringDictionary.cs
- OverflowException.cs
- versioninfo.cs
- OleDbPropertySetGuid.cs
- DeviceSpecificDialogCachedState.cs
- DocumentGridPage.cs
- DbCommandTree.cs
- SuspendDesigner.cs
- HostedElements.cs
- FixedHighlight.cs
- FileChangesMonitor.cs
- ArraySubsetEnumerator.cs
- BooleanConverter.cs
- ObjectAnimationBase.cs
- HttpAsyncResult.cs
- JavascriptCallbackBehaviorAttribute.cs
- NameTable.cs
- PropertyInfoSet.cs
- MessageQueueKey.cs
- ConfigXmlWhitespace.cs
- QilGenerator.cs
- HwndTarget.cs
- InvalidComObjectException.cs
- MultilineStringConverter.cs
- CompiledAction.cs
- SamlSecurityToken.cs
- VScrollProperties.cs
- QilReference.cs
- FontWeightConverter.cs
- LogStore.cs
- SapiRecoInterop.cs
- HwndSource.cs
- MediaPlayerState.cs
- ProxyAttribute.cs
- SourceLineInfo.cs
- SimpleTextLine.cs
- KeyMatchBuilder.cs
- SchemaObjectWriter.cs
- CodeMemberField.cs
- fixedPageContentExtractor.cs
- InlineUIContainer.cs
- behaviorssection.cs
- ValueQuery.cs
- TimeoutException.cs
- HttpHandlerAction.cs
- ConsoleKeyInfo.cs
- AppManager.cs
- XmlAttributeHolder.cs
- HttpHeaderCollection.cs
- SystemIPInterfaceProperties.cs
- HwndAppCommandInputProvider.cs
- XamlGridLengthSerializer.cs
- SBCSCodePageEncoding.cs
- XmlSignatureProperties.cs
- _LoggingObject.cs
- InputScope.cs
- TextRunCache.cs
- CreateParams.cs
- AutoGeneratedField.cs
- Expressions.cs
- ProcessDesigner.cs
- TextFormatterHost.cs
- FunctionDetailsReader.cs
- WebPartCancelEventArgs.cs
- GZipDecoder.cs
- EncoderReplacementFallback.cs
- Int32RectValueSerializer.cs
- ExpressionQuoter.cs
- TableItemStyle.cs
- ZipIOZip64EndOfCentralDirectoryLocatorBlock.cs
- TypeHelper.cs
- DesignerLinkAdapter.cs
- Evaluator.cs
- XmlNode.cs
- DataTableMapping.cs
- _Win32.cs
- ManifestResourceInfo.cs
- IdentityNotMappedException.cs
- ValidationHelper.cs
- DBConnection.cs
- NativeMethods.cs
- DataPointer.cs
- ComponentEditorForm.cs
- WorkerRequest.cs
- OrderedDictionary.cs
- TextTreeNode.cs
- DbConnectionOptions.cs
- ParallelTimeline.cs
- ToolBar.cs
- TreeNodeStyleCollectionEditor.cs
- CompensateDesigner.cs
- ClientTargetSection.cs
- SystemResourceKey.cs
- TypeViewSchema.cs
- RelationalExpressions.cs
- BamlResourceSerializer.cs
- XmlCodeExporter.cs