Code:
/ FXUpdate3074 / FXUpdate3074 / 1.1 / untmp / whidbey / QFE / ndp / fx / src / xsp / System / Web / Compilation / ExpressionBuilder.cs / 1 / ExpressionBuilder.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Web.Compilation { using System; using System.Security.Permissions; 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; [AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)] [AspNetHostingPermission(SecurityAction.InheritanceDemand, Level=AspNetHostingPermissionLevel.Minimal)] 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 = RuntimeConfig.GetConfig(virtualPath).Compilation; } 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. // Copyright (c) Microsoft Corporation. All rights reserved.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- ProcessModelSection.cs
- ArraySortHelper.cs
- QueueProcessor.cs
- MultiTrigger.cs
- FontStretch.cs
- ListViewUpdatedEventArgs.cs
- XmlQueryRuntime.cs
- FormsAuthenticationUser.cs
- ImageProxy.cs
- AsyncPostBackTrigger.cs
- Point3DConverter.cs
- FixedSOMContainer.cs
- FontFamily.cs
- DateTimeFormat.cs
- RoutedEventHandlerInfo.cs
- EllipticalNodeOperations.cs
- FlatButtonAppearance.cs
- BaseTreeIterator.cs
- basevalidator.cs
- TypedReference.cs
- ImmutableObjectAttribute.cs
- WebEventTraceProvider.cs
- SessionEndingCancelEventArgs.cs
- DataTableNewRowEvent.cs
- BrushMappingModeValidation.cs
- CriticalFinalizerObject.cs
- DomainConstraint.cs
- PtsPage.cs
- SponsorHelper.cs
- KnownBoxes.cs
- mongolianshape.cs
- GraphicsPath.cs
- FolderBrowserDialog.cs
- WpfWebRequestHelper.cs
- ImageField.cs
- WindowAutomationPeer.cs
- WebPartsSection.cs
- PropertyPushdownHelper.cs
- FormCollection.cs
- Page.cs
- SoapElementAttribute.cs
- PropertyMappingExceptionEventArgs.cs
- DataGridViewSelectedCellsAccessibleObject.cs
- PropertyChangingEventArgs.cs
- EditorPartCollection.cs
- X509ScopedServiceCertificateElement.cs
- glyphs.cs
- Drawing.cs
- FacetDescription.cs
- ResolveMatchesApril2005.cs
- CssStyleCollection.cs
- ZipIOEndOfCentralDirectoryBlock.cs
- StatusBarItemAutomationPeer.cs
- DataGridViewDataErrorEventArgs.cs
- WorkflowApplicationAbortedException.cs
- VirtualDirectoryMappingCollection.cs
- DictionaryTraceRecord.cs
- FilterQuery.cs
- TableRowCollection.cs
- RequestNavigateEventArgs.cs
- RegexCode.cs
- ConfigurationPropertyCollection.cs
- SelectingProviderEventArgs.cs
- DataGridViewTextBoxColumn.cs
- DiscoveryClientDocuments.cs
- DesignerDataTableBase.cs
- ConfigurationCollectionAttribute.cs
- SubpageParagraph.cs
- AndMessageFilterTable.cs
- NetWebProxyFinder.cs
- DynamicResourceExtensionConverter.cs
- WindowsGraphicsCacheManager.cs
- ReadOnlyDataSource.cs
- ObjectCloneHelper.cs
- SafeNativeMemoryHandle.cs
- Decoder.cs
- StylusShape.cs
- IRCollection.cs
- MsmqIntegrationValidationBehavior.cs
- TileBrush.cs
- SharedUtils.cs
- Accessible.cs
- AttributeQuery.cs
- HtmlShim.cs
- TableColumn.cs
- TextBoxLine.cs
- RowUpdatingEventArgs.cs
- Message.cs
- OLEDB_Util.cs
- OutArgument.cs
- NativeMethods.cs
- TokenCreationException.cs
- RuleInfoComparer.cs
- SystemInfo.cs
- FixedPage.cs
- ButtonBase.cs
- LineProperties.cs
- CircleHotSpot.cs
- AttributeSetAction.cs
- AppearanceEditorPart.cs