Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / NetFx40 / System.Activities / System / Activities / Expressions / Or.cs / 1305376 / Or.cs
//---------------------------------------------------------------- // Copyright (c) Microsoft Corporation. All rights reserved. //--------------------------------------------------------------- namespace System.Activities.Expressions { using System.Activities; using System.Activities.Validation; using System.ComponentModel; using System.Diagnostics.CodeAnalysis; using System.Linq.Expressions; using System.Runtime; [SuppressMessage(FxCop.Category.Naming, FxCop.Rule.IdentifiersShouldNotMatchKeywords, Justification = "Optimizing for XAML naming. VB imperative users will [] qualify (e.g. New [Or])")] public sealed class Or: CodeActivity { //Lock is not needed for operationFunction here. The reason is that delegates for a given Or are the same. //It's possible that 2 threads are assigning the operationFucntion at the same time. But it's okay because the compiled codes are the same. static Func operationFunction; [RequiredArgument] [DefaultValue(null)] public InArgument Left { get; set; } [RequiredArgument] [DefaultValue(null)] public InArgument Right { get; set; } protected override void CacheMetadata(CodeActivityMetadata metadata) { BinaryExpressionHelper.OnGetArguments(metadata, this.Left, this.Right); if (operationFunction == null) { ValidationError validationError; if (!BinaryExpressionHelper.TryGenerateLinqDelegate(ExpressionType.Or, out operationFunction, out validationError)) { metadata.AddValidationError(validationError); } } } protected override TResult Execute(CodeActivityContext context) { Fx.Assert(operationFunction != null, "OperationFunction must exist."); TLeft leftValue = this.Left.Get(context); TRight rightValue = this.Right.Get(context); return operationFunction(leftValue, rightValue); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- MappingMetadataHelper.cs
- Parallel.cs
- MultiBindingExpression.cs
- ProfilePropertyNameValidator.cs
- OrderablePartitioner.cs
- SchemaImporter.cs
- Trace.cs
- CompiledIdentityConstraint.cs
- UpdateCommand.cs
- LineSegment.cs
- OleDbSchemaGuid.cs
- MergeFailedEvent.cs
- SurrogateSelector.cs
- ExpressionLexer.cs
- AnnouncementClient.cs
- ToolStripGrip.cs
- RichTextBoxConstants.cs
- TextRangeEdit.cs
- DockPanel.cs
- RegexCharClass.cs
- SizeKeyFrameCollection.cs
- ProtocolsConfiguration.cs
- HttpModulesSection.cs
- TransportListener.cs
- Operators.cs
- CorrelationManager.cs
- CaseInsensitiveOrdinalStringComparer.cs
- GAC.cs
- WrappedReader.cs
- login.cs
- WebEventCodes.cs
- StyleSheetDesigner.cs
- EntityAdapter.cs
- PolicyLevel.cs
- MembershipUser.cs
- RelationshipEndMember.cs
- ComplexLine.cs
- EntityReference.cs
- sqlstateclientmanager.cs
- SID.cs
- Verify.cs
- TreeNode.cs
- SecurityDocument.cs
- ParameterBinding.cs
- CodeAttributeDeclaration.cs
- ParseNumbers.cs
- HelpKeywordAttribute.cs
- ConfigXmlReader.cs
- MetabaseSettings.cs
- DocumentGrid.cs
- VariableModifiersHelper.cs
- EntityConnection.cs
- ProxyAttribute.cs
- Rfc2898DeriveBytes.cs
- LiteralControl.cs
- DeferredElementTreeState.cs
- OAVariantLib.cs
- ExternalFile.cs
- MeasurementDCInfo.cs
- BaseAsyncResult.cs
- Vars.cs
- BooleanToVisibilityConverter.cs
- Random.cs
- WebExceptionStatus.cs
- SafeNativeMethodsMilCoreApi.cs
- XmlSchemaAll.cs
- sqlcontext.cs
- Slider.cs
- ValidatorCompatibilityHelper.cs
- RankException.cs
- DynamicQueryableWrapper.cs
- _SSPISessionCache.cs
- Positioning.cs
- DataBoundControlHelper.cs
- ScrollProperties.cs
- SessionPageStatePersister.cs
- DbModificationCommandTree.cs
- Crypto.cs
- RequestCacheEntry.cs
- DefaultTextStore.cs
- ExtenderControl.cs
- HandleScope.cs
- TransformGroup.cs
- MenuStrip.cs
- PropertyGridView.cs
- StackOverflowException.cs
- SmtpException.cs
- NotImplementedException.cs
- RefreshPropertiesAttribute.cs
- Compress.cs
- LogWriteRestartAreaState.cs
- MessageSecurityProtocol.cs
- EndpointDiscoveryBehavior.cs
- GridViewRow.cs
- DeviceSpecificChoice.cs
- ToolStripItemImageRenderEventArgs.cs
- InternalBufferManager.cs
- PackageRelationshipSelector.cs
- ClientProxyGenerator.cs
- RelationshipConstraintValidator.cs