Code:
/ FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / fx / src / xsp / System / Web / UI / WebParts / WebPartTransformerAttribute.cs / 1 / WebPartTransformerAttribute.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Web.UI.WebControls.WebParts { using System; using System.Collections; using System.Collections.Generic; using System.ComponentModel; using System.Diagnostics; using System.Security.Permissions; [AttributeUsage(AttributeTargets.Class)] [AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)] public sealed class WebPartTransformerAttribute : Attribute { // Cache provider and consumer types for each WebPartTransformer type. We store an array of // 2 Types (consumer, provider) indexed by transformer type. private static readonly Hashtable transformerCache = Hashtable.Synchronized(new Hashtable()); private Type _consumerType; private Type _providerType; public WebPartTransformerAttribute(Type consumerType, Type providerType) { if (consumerType == null) { throw new ArgumentNullException("consumerType"); } if (providerType == null) { throw new ArgumentNullException("providerType"); } _consumerType = consumerType; _providerType = providerType; } public Type ConsumerType { get { return _consumerType; } } public Type ProviderType { get { return _providerType; } } public static Type GetConsumerType(Type transformerType) { return GetTransformerTypes(transformerType)[0]; } public static Type GetProviderType(Type transformerType) { return GetTransformerTypes(transformerType)[1]; } ////// Returns the types a transformer can accept on its "connection points" /// private static Type[] GetTransformerTypes(Type transformerType) { if (transformerType == null) { throw new ArgumentNullException("transformerType"); } if (!transformerType.IsSubclassOf(typeof(WebPartTransformer))) { throw new InvalidOperationException( SR.GetString(SR.WebPartTransformerAttribute_NotTransformer, transformerType.FullName)); } Type[] types = (Type[])transformerCache[transformerType]; if (types == null) { types = GetTransformerTypesFromAttribute(transformerType); transformerCache[transformerType] = types; } return types; } private static Type[] GetTransformerTypesFromAttribute(Type transformerType) { Type[] types = new Type[2]; object[] attributes = transformerType.GetCustomAttributes(typeof(WebPartTransformerAttribute), true); // WebPartTransformerAttribute.AllowMultiple is false Debug.Assert(attributes.Length == 0 || attributes.Length == 1); if (attributes.Length == 1) { WebPartTransformerAttribute attribute = (WebPartTransformerAttribute)attributes[0]; if (attribute.ConsumerType == attribute.ProviderType) { throw new InvalidOperationException(SR.GetString(SR.WebPartTransformerAttribute_SameTypes)); } types[0] = attribute.ConsumerType; types[1] = attribute.ProviderType; } else { throw new InvalidOperationException( SR.GetString(SR.WebPartTransformerAttribute_Missing, transformerType.FullName)); } return types; } } }
Link Menu

This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- XmlChildNodes.cs
- StrokeCollectionConverter.cs
- CodeFieldReferenceExpression.cs
- Compiler.cs
- TaiwanCalendar.cs
- BuilderPropertyEntry.cs
- FileVersionInfo.cs
- UICuesEvent.cs
- securitycriticaldata.cs
- SecurityElement.cs
- ServiceDurableInstanceContextProvider.cs
- Point3DValueSerializer.cs
- DomainUpDown.cs
- WinFormsComponentEditor.cs
- ApplicationBuildProvider.cs
- TableCell.cs
- ChangeInterceptorAttribute.cs
- ManagementInstaller.cs
- ObjectStateEntryDbDataRecord.cs
- MbpInfo.cs
- NodeFunctions.cs
- ToolboxBitmapAttribute.cs
- ReadOnlyCollection.cs
- CommandTreeTypeHelper.cs
- PriorityQueue.cs
- SoapExtensionTypeElementCollection.cs
- ImageDesigner.cs
- Avt.cs
- RelatedCurrencyManager.cs
- InternalConfigRoot.cs
- PlatformCulture.cs
- ProfessionalColors.cs
- TraceSection.cs
- ConnectionStringsExpressionBuilder.cs
- OrderablePartitioner.cs
- SchemaNotation.cs
- StreamReader.cs
- OutKeywords.cs
- Config.cs
- XmlArrayItemAttributes.cs
- XPathEmptyIterator.cs
- AuthenticationService.cs
- OracleCommandBuilder.cs
- ContentWrapperAttribute.cs
- UrlPath.cs
- Icon.cs
- XmlWriterSettings.cs
- tibetanshape.cs
- SimpleRecyclingCache.cs
- UnsafeNativeMethods.cs
- ArraySegment.cs
- OutputScopeManager.cs
- XpsImageSerializationService.cs
- WsiProfilesElement.cs
- ResXResourceReader.cs
- TemplateGroupCollection.cs
- DataDesignUtil.cs
- GatewayDefinition.cs
- MessageDecoder.cs
- ObjectConverter.cs
- CultureInfoConverter.cs
- ReliabilityContractAttribute.cs
- MenuEventArgs.cs
- ConfigurationManagerInternalFactory.cs
- wmiprovider.cs
- CodeIdentifiers.cs
- ValueUnavailableException.cs
- SchemaTypeEmitter.cs
- LineVisual.cs
- ContextMenu.cs
- OdbcCommand.cs
- RawAppCommandInputReport.cs
- UIElementIsland.cs
- CorruptingExceptionCommon.cs
- WebPartExportVerb.cs
- Profiler.cs
- IndexedGlyphRun.cs
- UrlAuthorizationModule.cs
- TextServicesDisplayAttribute.cs
- DynamicScriptObject.cs
- Deserializer.cs
- RC2CryptoServiceProvider.cs
- InputScope.cs
- ValidationResult.cs
- RegexCompiler.cs
- PermissionListSet.cs
- EntityContainerEmitter.cs
- ParameterToken.cs
- PeerMaintainer.cs
- Literal.cs
- TreeNode.cs
- ServerProtocol.cs
- SerializerDescriptor.cs
- PerfCounterSection.cs
- DataServiceQueryProvider.cs
- TextRangeAdaptor.cs
- Point4D.cs
- WebPartUserCapability.cs
- EventProxy.cs
- SecurityTokenSerializer.cs