Code:
/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / whidbey / NetFxQFE / ndp / fx / src / CompMod / System / ComponentModel / EventHandlerList.cs / 1 / EventHandlerList.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.ComponentModel { using System; using System.Diagnostics.CodeAnalysis; using System.Security.Permissions; ////// [HostProtection(SharedState = true)] public sealed class EventHandlerList : IDisposable { ListEntry head; Component parent; ///Provides a simple list of delegates. This class cannot be inherited. ////// Creates a new event handler list. /// [SuppressMessage("Microsoft.Security", "CA2122:DoNotIndirectlyExposeMethodsWithLinkDemands")] public EventHandlerList() { } ////// Creates a new event handler list. The parent component is used to check the component's /// CanRaiseEvents property. /// [SuppressMessage("Microsoft.Security", "CA2122:DoNotIndirectlyExposeMethodsWithLinkDemands")] internal EventHandlerList(Component parent) { this.parent = parent; } ////// public Delegate this[object key] { [SuppressMessage("Microsoft.Security", "CA2122:DoNotIndirectlyExposeMethodsWithLinkDemands")] get { ListEntry e = null; if (parent == null || parent.CanRaiseEventsInternal) { e = Find(key); } if (e != null) { return e.handler; } else { return null; } } set { ListEntry e = Find(key); if (e != null) { e.handler = value; } else { head = new ListEntry(key, value, head); } } } ///Gets or sets the delegate for the specified key. ////// [SuppressMessage("Microsoft.Security", "CA2122:DoNotIndirectlyExposeMethodsWithLinkDemands")] public void AddHandler(object key, Delegate value) { ListEntry e = Find(key); if (e != null) { e.handler = Delegate.Combine(e.handler, value); } else { head = new ListEntry(key, value, head); } } ///[To be supplied.] ///allows you to add a list of events to this list public void AddHandlers(EventHandlerList listToAddFrom) { ListEntry currentListEntry = listToAddFrom.head; while (currentListEntry != null) { AddHandler(currentListEntry.key, currentListEntry.handler); currentListEntry = currentListEntry.next; } } ////// public void Dispose() { head = null; } private ListEntry Find(object key) { ListEntry found = head; while (found != null) { if (found.key == key) { break; } found = found.next; } return found; } ///[To be supplied.] ////// [SuppressMessage("Microsoft.Security", "CA2122:DoNotIndirectlyExposeMethodsWithLinkDemands")] public void RemoveHandler(object key, Delegate value) { ListEntry e = Find(key); if (e != null) { e.handler = Delegate.Remove(e.handler, value); } // else... no error for removal of non-existant delegate // } private sealed class ListEntry { internal ListEntry next; internal object key; internal Delegate handler; public ListEntry(object key, Delegate handler, ListEntry next) { this.next = next; this.key = key; this.handler = handler; } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //------------------------------------------------------------------------------ //[To be supplied.] ///// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.ComponentModel { using System; using System.Diagnostics.CodeAnalysis; using System.Security.Permissions; ////// [HostProtection(SharedState = true)] public sealed class EventHandlerList : IDisposable { ListEntry head; Component parent; ///Provides a simple list of delegates. This class cannot be inherited. ////// Creates a new event handler list. /// [SuppressMessage("Microsoft.Security", "CA2122:DoNotIndirectlyExposeMethodsWithLinkDemands")] public EventHandlerList() { } ////// Creates a new event handler list. The parent component is used to check the component's /// CanRaiseEvents property. /// [SuppressMessage("Microsoft.Security", "CA2122:DoNotIndirectlyExposeMethodsWithLinkDemands")] internal EventHandlerList(Component parent) { this.parent = parent; } ////// public Delegate this[object key] { [SuppressMessage("Microsoft.Security", "CA2122:DoNotIndirectlyExposeMethodsWithLinkDemands")] get { ListEntry e = null; if (parent == null || parent.CanRaiseEventsInternal) { e = Find(key); } if (e != null) { return e.handler; } else { return null; } } set { ListEntry e = Find(key); if (e != null) { e.handler = value; } else { head = new ListEntry(key, value, head); } } } ///Gets or sets the delegate for the specified key. ////// [SuppressMessage("Microsoft.Security", "CA2122:DoNotIndirectlyExposeMethodsWithLinkDemands")] public void AddHandler(object key, Delegate value) { ListEntry e = Find(key); if (e != null) { e.handler = Delegate.Combine(e.handler, value); } else { head = new ListEntry(key, value, head); } } ///[To be supplied.] ///allows you to add a list of events to this list public void AddHandlers(EventHandlerList listToAddFrom) { ListEntry currentListEntry = listToAddFrom.head; while (currentListEntry != null) { AddHandler(currentListEntry.key, currentListEntry.handler); currentListEntry = currentListEntry.next; } } ////// public void Dispose() { head = null; } private ListEntry Find(object key) { ListEntry found = head; while (found != null) { if (found.key == key) { break; } found = found.next; } return found; } ///[To be supplied.] ////// [SuppressMessage("Microsoft.Security", "CA2122:DoNotIndirectlyExposeMethodsWithLinkDemands")] public void RemoveHandler(object key, Delegate value) { ListEntry e = Find(key); if (e != null) { e.handler = Delegate.Remove(e.handler, value); } // else... no error for removal of non-existant delegate // } private sealed class ListEntry { internal ListEntry next; internal object key; internal Delegate handler; public ListEntry(object key, Delegate handler, ListEntry next) { this.next = next; this.key = key; this.handler = handler; } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.[To be supplied.] ///
Link Menu

This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- EmptyEnumerator.cs
- LocalizationParserHooks.cs
- SelectorItemAutomationPeer.cs
- PageCatalogPartDesigner.cs
- MenuCommand.cs
- ForwardPositionQuery.cs
- XmlSchemaAny.cs
- BaseDataList.cs
- GlobalId.cs
- LowerCaseStringConverter.cs
- OracleMonthSpan.cs
- Hashtable.cs
- LogConverter.cs
- TrackBarDesigner.cs
- DataServiceKeyAttribute.cs
- Sql8ExpressionRewriter.cs
- XXXOnTypeBuilderInstantiation.cs
- HtmlInputFile.cs
- securitycriticaldataClass.cs
- Composition.cs
- PeerObject.cs
- SizeConverter.cs
- BamlVersionHeader.cs
- BamlLocalizableResourceKey.cs
- Rect.cs
- TableHeaderCell.cs
- BaseUriHelper.cs
- XslTransform.cs
- PenThreadWorker.cs
- ObjRef.cs
- DetailsViewCommandEventArgs.cs
- DesigntimeLicenseContext.cs
- BufferedGraphics.cs
- BlockCollection.cs
- DesignerMetadata.cs
- ParseElementCollection.cs
- VisualStyleTypesAndProperties.cs
- CTreeGenerator.cs
- BitmapFrame.cs
- Missing.cs
- WeakReference.cs
- BinaryObjectInfo.cs
- ServiceOperationParameter.cs
- RecordBuilder.cs
- SizeLimitedCache.cs
- XPathBuilder.cs
- Context.cs
- HttpProtocolReflector.cs
- ReverseInheritProperty.cs
- TextTreePropertyUndoUnit.cs
- FormsAuthenticationTicket.cs
- WebPartEventArgs.cs
- ServiceKnownTypeAttribute.cs
- GridViewCommandEventArgs.cs
- DayRenderEvent.cs
- Point4DConverter.cs
- RegularExpressionValidator.cs
- RtType.cs
- WebServiceData.cs
- DesignBindingEditor.cs
- CreateParams.cs
- QueryHandler.cs
- ComponentEditorPage.cs
- SafeSecurityHandles.cs
- FileCodeGroup.cs
- Evidence.cs
- CustomAttributeFormatException.cs
- ResourceProviderFactory.cs
- DynamicContractTypeBuilder.cs
- StatusBarPanel.cs
- StringUtil.cs
- FacetDescriptionElement.cs
- RepeatInfo.cs
- RemoteWebConfigurationHostStream.cs
- EntityViewGenerationAttribute.cs
- ContractComponent.cs
- CalendarAutoFormat.cs
- ToRequest.cs
- MeshGeometry3D.cs
- NameTable.cs
- _SSPISessionCache.cs
- ObjRef.cs
- OleDbStruct.cs
- ValidationEventArgs.cs
- ManagedWndProcTracker.cs
- MenuItem.cs
- MenuItem.cs
- SpotLight.cs
- PenLineCapValidation.cs
- ArrayExtension.cs
- ConditionedDesigner.cs
- CurrencyWrapper.cs
- Attribute.cs
- BinaryCommonClasses.cs
- TypeConverterHelper.cs
- BaseTemplateCodeDomTreeGenerator.cs
- SqlConnection.cs
- ListViewPagedDataSource.cs
- SelectionListDesigner.cs
- ToolStripGripRenderEventArgs.cs