Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / NetFx40 / System.Activities / System / Activities / CodeActivity.cs / 1305376 / CodeActivity.cs
//------------------------------------------------------------------------------ // Copyright (c) Microsoft Corporation. All rights reserved. //----------------------------------------------------------------------------- namespace System.Activities { using System.Activities.Runtime; using System.Activities.Validation; using System.Collections.Generic; using System.Runtime; using System.Runtime.Serialization; public abstract class CodeActivity : Activity { protected CodeActivity() { } [IgnoreDataMember] [Fx.Tag.KnownXamlExternal] protected sealed override FuncImplementation { get { return null; } set { if (value != null) { throw FxTrace.Exception.AsError(new NotSupportedException()); } } } protected abstract void Execute(CodeActivityContext context); sealed internal override void InternalExecute(ActivityInstance instance, ActivityExecutor executor, BookmarkManager bookmarkManager) { CodeActivityContext context = executor.CodeActivityContextPool.Acquire(); try { context.Initialize(instance, executor); Execute(context); } finally { context.Dispose(); executor.CodeActivityContextPool.Release(context); } } sealed internal override void InternalCancel(ActivityInstance instance, ActivityExecutor executor, BookmarkManager bookmarkManager) { Fx.Assert("Cancel should never be called on CodeActivity since it's synchronous"); } sealed internal override void InternalAbort(ActivityInstance instance, ActivityExecutor executor, Exception terminationReason) { // no-op, this is only called if an exception is thrown out of execute } sealed internal override void OnInternalCacheMetadata(bool createEmptyBindings) { CodeActivityMetadata metadata = new CodeActivityMetadata(this, this.GetParentEnvironment(), createEmptyBindings); CacheMetadata(metadata); metadata.Dispose(); } protected sealed override void CacheMetadata(ActivityMetadata metadata) { throw FxTrace.Exception.AsError(new InvalidOperationException(SR.WrongCacheMetadataForCodeActivity)); } protected virtual void CacheMetadata(CodeActivityMetadata metadata) { // We bypass the metadata call to avoid the null checks SetArgumentsCollection(ReflectedInformation.GetArguments(this), metadata.CreateEmptyBindings); } } public abstract class CodeActivity : Activity { protected CodeActivity() { } [IgnoreDataMember] [Fx.Tag.KnownXamlExternal] protected sealed override Func Implementation { get { return null; } set { if (value != null) { throw FxTrace.Exception.AsError(new NotSupportedException()); } } } protected abstract TResult Execute(CodeActivityContext context); sealed internal override void InternalExecute(ActivityInstance instance, ActivityExecutor executor, BookmarkManager bookmarkManager) { CodeActivityContext context = executor.CodeActivityContextPool.Acquire(); try { context.Initialize(instance, executor); TResult executeResult = Execute(context); this.Result.Set(context, executeResult); } finally { context.Dispose(); executor.CodeActivityContextPool.Release(context); } } sealed internal override void InternalCancel(ActivityInstance instance, ActivityExecutor executor, BookmarkManager bookmarkManager) { Fx.Assert("Cancel should never be called on CodeActivity since it's synchronous"); } sealed internal override void InternalAbort(ActivityInstance instance, ActivityExecutor executor, Exception terminationReason) { // no-op, this is only called if an exception is thrown out of execute } sealed internal override void OnInternalCacheMetadataExceptResult(bool createEmptyBindings) { CodeActivityMetadata metadata = new CodeActivityMetadata(this, this.GetParentEnvironment(), createEmptyBindings); CacheMetadata(metadata); metadata.Dispose(); } protected sealed override void CacheMetadata(ActivityMetadata metadata) { throw FxTrace.Exception.AsError(new InvalidOperationException(SR.WrongCacheMetadataForCodeActivity)); } protected virtual void CacheMetadata(CodeActivityMetadata metadata) { // We bypass the metadata call to avoid the null checks SetArgumentsCollection(ReflectedInformation.GetArguments(this), metadata.CreateEmptyBindings); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
Link Menu
![Network programming in C#, Network Programming in VB.NET, Network Programming in .NET](/images/book.jpg)
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- ConfigXmlComment.cs
- SrgsGrammarCompiler.cs
- StructuralCache.cs
- TypeToken.cs
- SpellerInterop.cs
- ChildDocumentBlock.cs
- Font.cs
- IteratorFilter.cs
- GridItemProviderWrapper.cs
- UTF7Encoding.cs
- FormsAuthenticationConfiguration.cs
- FlagsAttribute.cs
- ShortcutKeysEditor.cs
- AccessDataSource.cs
- LinqDataSourceDisposeEventArgs.cs
- Wizard.cs
- basenumberconverter.cs
- CircleHotSpot.cs
- ProxyManager.cs
- AttachedPropertyMethodSelector.cs
- XmlSerializerNamespaces.cs
- PanelStyle.cs
- OutKeywords.cs
- TemplateField.cs
- FormattedText.cs
- WebPartEditVerb.cs
- XmlSchemaAnyAttribute.cs
- PresentationAppDomainManager.cs
- DataContractJsonSerializer.cs
- TextRangeAdaptor.cs
- TagPrefixAttribute.cs
- DrawingImage.cs
- XmlKeywords.cs
- MarkupCompilePass2.cs
- TemplateApplicationHelper.cs
- DnsPermission.cs
- SelectionList.cs
- RemotingAttributes.cs
- MenuItemStyleCollection.cs
- recordstatescratchpad.cs
- DayRenderEvent.cs
- Range.cs
- SQLMoneyStorage.cs
- CharacterBuffer.cs
- XomlCompiler.cs
- EventMap.cs
- RawStylusInputCustomDataList.cs
- Context.cs
- ProcessHost.cs
- PersistenceTypeAttribute.cs
- ObjectStateManager.cs
- TimeoutValidationAttribute.cs
- Lock.cs
- TaiwanCalendar.cs
- LongValidatorAttribute.cs
- BrowserInteropHelper.cs
- CancelEventArgs.cs
- DataServiceKeyAttribute.cs
- RegionData.cs
- WindowsPrincipal.cs
- SHA384Managed.cs
- Style.cs
- ChangeNode.cs
- SafeBitVector32.cs
- StartUpEventArgs.cs
- MatrixAnimationUsingKeyFrames.cs
- WindowsFormsEditorServiceHelper.cs
- dbenumerator.cs
- PathFigure.cs
- WindowShowOrOpenTracker.cs
- RuleValidation.cs
- ArrayHelper.cs
- followingsibling.cs
- TextDecorationLocationValidation.cs
- SessionEndedEventArgs.cs
- ServiceDescription.cs
- XmlNodeComparer.cs
- XmlSchemaFacet.cs
- LabelDesigner.cs
- RSAOAEPKeyExchangeDeformatter.cs
- XsdDuration.cs
- DurableOperationAttribute.cs
- CriticalFinalizerObject.cs
- AuthenticationService.cs
- WithStatement.cs
- RelationshipWrapper.cs
- DataGridColumn.cs
- SQLDecimalStorage.cs
- DataProtection.cs
- FixedSOMTable.cs
- AnchoredBlock.cs
- DropSource.cs
- PackWebResponse.cs
- RootDesignerSerializerAttribute.cs
- RequestStatusBarUpdateEventArgs.cs
- VisualCollection.cs
- XmlRawWriter.cs
- SafeFileMappingHandle.cs
- WebEncodingValidatorAttribute.cs
- ReflectTypeDescriptionProvider.cs