Code:
/ DotNET / DotNET / 8.0 / 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
- QilList.cs
- ConsoleTraceListener.cs
- UniqueIdentifierService.cs
- CodeRegionDirective.cs
- SqlClientMetaDataCollectionNames.cs
- SurrogateEncoder.cs
- BeginGetFileNameFromUserRequest.cs
- CompressEmulationStream.cs
- MemberProjectionIndex.cs
- PageTheme.cs
- MimeAnyImporter.cs
- CreateParams.cs
- DefaultMemberAttribute.cs
- DbExpressionVisitor_TResultType.cs
- OdbcError.cs
- WindowsRichEdit.cs
- RenderDataDrawingContext.cs
- SamlNameIdentifierClaimResource.cs
- RectKeyFrameCollection.cs
- Int64.cs
- WindowsSysHeader.cs
- _SecureChannel.cs
- TextTreeTextNode.cs
- AutoFocusStyle.xaml.cs
- ItemContainerPattern.cs
- dtdvalidator.cs
- DrawTreeNodeEventArgs.cs
- TypeToArgumentTypeConverter.cs
- SmtpFailedRecipientException.cs
- ImagingCache.cs
- SqlDuplicator.cs
- StylusDevice.cs
- GetMemberBinder.cs
- OletxTransactionManager.cs
- DeclarativeCatalogPart.cs
- TextRangeProviderWrapper.cs
- _NativeSSPI.cs
- XmlSerializerAssemblyAttribute.cs
- EncoderFallback.cs
- OleDbDataReader.cs
- HtmlAnchor.cs
- ChildrenQuery.cs
- EmbeddedMailObject.cs
- UiaCoreTypesApi.cs
- URLEditor.cs
- ItemTypeToolStripMenuItem.cs
- IBuiltInEvidence.cs
- IndicCharClassifier.cs
- HGlobalSafeHandle.cs
- SecurityManager.cs
- HtmlInputCheckBox.cs
- XmlIlVisitor.cs
- webclient.cs
- ErrorFormatterPage.cs
- Debugger.cs
- PerformanceCounterTraceRecord.cs
- RefType.cs
- SecurityDescriptor.cs
- CannotUnloadAppDomainException.cs
- EntityDataSourceConfigureObjectContext.cs
- UniqueIdentifierService.cs
- GrabHandleGlyph.cs
- DocumentSchemaValidator.cs
- ListParaClient.cs
- BrushValueSerializer.cs
- ToolBar.cs
- ServiceParser.cs
- SQLBinary.cs
- ConnectionProviderAttribute.cs
- Directory.cs
- SoundPlayer.cs
- HashCodeCombiner.cs
- AssemblyNameProxy.cs
- CodeGotoStatement.cs
- ReadOnlyDataSource.cs
- Model3D.cs
- DocumentReference.cs
- ProtocolsConfigurationEntry.cs
- NotifyParentPropertyAttribute.cs
- HttpWebRequest.cs
- X509SubjectKeyIdentifierClause.cs
- OdbcConnection.cs
- BitmapSizeOptions.cs
- SecurityHeaderTokenResolver.cs
- ThreadSafeList.cs
- RouteValueDictionary.cs
- login.cs
- TagNameToTypeMapper.cs
- StreamHelper.cs
- ToolStripStatusLabel.cs
- TreeSet.cs
- Int16AnimationUsingKeyFrames.cs
- Pair.cs
- ImagingCache.cs
- DesigntimeLicenseContextSerializer.cs
- TypeExtensions.cs
- MainMenu.cs
- ToolStripItemCollection.cs
- FontFamily.cs
- StagingAreaInputItem.cs