Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / xsp / System / Web / Compilation / ExpressionBuilder.cs / 1305376 / ExpressionBuilder.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Web.Compilation { using System; using System.CodeDom; using System.Collections; using System.Collections.Specialized; using System.ComponentModel.Design; using System.Web.Configuration; using System.Reflection; using System.Web; using System.Web.Hosting; #if !FEATURE_PAL using System.Web.UI.Design; #endif // !FEATURE_PAL using System.Web.UI; using System.Web.Util; public abstract class ExpressionBuilder { private static ExpressionBuilder dataBindingExpressionBuilder; internal virtual void BuildExpression(BoundPropertyEntry bpe, ControlBuilder controlBuilder, CodeExpression controlReference, CodeStatementCollection methodStatements, CodeStatementCollection statements, CodeLinePragma linePragma, ref bool hasTempObject) { CodeExpression codeExpression = GetCodeExpression(bpe, bpe.ParsedExpressionData, new ExpressionBuilderContext(controlBuilder.VirtualPath)); CodeDomUtility.CreatePropertySetStatements(methodStatements, statements, controlReference, bpe.Name, bpe.Type, codeExpression, linePragma); } internal static ExpressionBuilder GetExpressionBuilder(string expressionPrefix, VirtualPath virtualPath) { return GetExpressionBuilder(expressionPrefix, virtualPath, null); } internal static ExpressionBuilder GetExpressionBuilder(string expressionPrefix, VirtualPath virtualPath, IDesignerHost host) { // If there is no expressionPrefix, it's a v1 style databinding expression if (expressionPrefix.Length == 0) { if (dataBindingExpressionBuilder == null) { dataBindingExpressionBuilder = new DataBindingExpressionBuilder(); } return dataBindingExpressionBuilder; } CompilationSection config = null; // If we are in the designer, we need to access IWebApplication config instead #if !FEATURE_PAL // FEATURE_PAL does not support designer-based features if (host != null) { IWebApplication webapp = (IWebApplication)host.GetService(typeof(IWebApplication)); if (webapp != null) { config = webapp.OpenWebConfiguration(true).GetSection("system.web/compilation") as CompilationSection; } } #endif // !FEATURE_PAL // If we failed to get config from the designer, fall back on runtime config always if (config == null) { config = MTConfigUtil.GetCompilationConfig(virtualPath); } System.Web.Configuration.ExpressionBuilder builder = config.ExpressionBuilders[expressionPrefix]; if (builder == null) { throw new HttpParseException(SR.GetString(SR.InvalidExpressionPrefix, expressionPrefix)); } Type expressionBuilderType = null; if (host != null) { // If we are in the designer, we have to use the type resolution service ITypeResolutionService ts = (ITypeResolutionService)host.GetService(typeof(ITypeResolutionService)); if (ts != null) { expressionBuilderType = ts.GetType(builder.Type); } } if (expressionBuilderType == null) { expressionBuilderType = builder.TypeInternal; } Debug.Assert(expressionBuilderType != null, "expressionBuilderType should not be null"); if (!typeof(ExpressionBuilder).IsAssignableFrom(expressionBuilderType)) { throw new HttpParseException(SR.GetString(SR.ExpressionBuilder_InvalidType, expressionBuilderType.FullName)); } ExpressionBuilder expressionBuilder = (ExpressionBuilder)HttpRuntime.FastCreatePublicInstance(expressionBuilderType); return expressionBuilder; } // // Public API // public virtual bool SupportsEvaluate { get { return false; } } public virtual object ParseExpression(string expression, Type propertyType, ExpressionBuilderContext context) { return null; } public abstract CodeExpression GetCodeExpression(BoundPropertyEntry entry, object parsedData, ExpressionBuilderContext context); public virtual object EvaluateExpression(object target, BoundPropertyEntry entry, object parsedData, ExpressionBuilderContext context) { return null; } } } // 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
- GeneralTransform2DTo3DTo2D.cs
- Activator.cs
- LookupTables.cs
- TripleDESCryptoServiceProvider.cs
- NullableBoolConverter.cs
- EdmProviderManifest.cs
- SchemaNotation.cs
- X509CertificateRecipientClientCredential.cs
- DocumentScope.cs
- SendingRequestEventArgs.cs
- Accessible.cs
- TextEditorDragDrop.cs
- EntityContainerRelationshipSet.cs
- TrackingDataItemValue.cs
- CodeAttributeArgumentCollection.cs
- Popup.cs
- RowUpdatedEventArgs.cs
- AdornerPresentationContext.cs
- AbstractExpressions.cs
- Label.cs
- CachedPathData.cs
- PagedDataSource.cs
- SplineKeyFrames.cs
- VisualStyleRenderer.cs
- AuthorizationRuleCollection.cs
- iisPickupDirectory.cs
- ItemsPresenter.cs
- DllNotFoundException.cs
- InputReportEventArgs.cs
- SocketException.cs
- CompileLiteralTextParser.cs
- httpapplicationstate.cs
- QuadraticBezierSegment.cs
- XmlQueryRuntime.cs
- WebHttpElement.cs
- AncestorChangedEventArgs.cs
- ObjectViewEntityCollectionData.cs
- Accessible.cs
- ConnectorSelectionGlyph.cs
- Soap12ProtocolImporter.cs
- XhtmlBasicTextViewAdapter.cs
- ApplicationException.cs
- ZipPackage.cs
- PropertyEmitter.cs
- ParagraphResult.cs
- MetabaseServerConfig.cs
- IgnorePropertiesAttribute.cs
- HuffModule.cs
- QilName.cs
- DefaultProxySection.cs
- AsymmetricKeyExchangeFormatter.cs
- TableRowCollection.cs
- Font.cs
- AbsoluteQuery.cs
- CertificateReferenceElement.cs
- SystemThemeKey.cs
- NCryptSafeHandles.cs
- DateRangeEvent.cs
- AccessDataSourceDesigner.cs
- MatrixAnimationUsingPath.cs
- GenerateHelper.cs
- PlacementWorkspace.cs
- Timer.cs
- XmlDocumentFragment.cs
- DBParameter.cs
- RSAPKCS1SignatureFormatter.cs
- TransactionChannelFactory.cs
- CharStorage.cs
- RoutingTable.cs
- MailMessageEventArgs.cs
- TdsEnums.cs
- HandleRef.cs
- XmlNodeReader.cs
- ServiceReference.cs
- BatchParser.cs
- uribuilder.cs
- ElementHostPropertyMap.cs
- ResolveMatchesMessage11.cs
- ProfilePropertySettingsCollection.cs
- DataGridViewAutoSizeModeEventArgs.cs
- ValidationErrorEventArgs.cs
- ContentType.cs
- CodeConstructor.cs
- XmlText.cs
- WebServiceClientProxyGenerator.cs
- XmlEncoding.cs
- HMACSHA384.cs
- ProgressBarAutomationPeer.cs
- SingleTagSectionHandler.cs
- AccessibilityHelperForVista.cs
- UniqueConstraint.cs
- ChannelTokenTypeConverter.cs
- OwnerDrawPropertyBag.cs
- CacheSection.cs
- ObjectStateManager.cs
- Serializer.cs
- WmlLiteralTextAdapter.cs
- IdnElement.cs
- ExpressionReplacer.cs
- GorillaCodec.cs