Code:
/ FXUpdate3074 / FXUpdate3074 / 1.1 / DEVDIV / depot / DevDiv / releases / whidbey / QFE / ndp / fx / src / xsp / System / Web / UI / WebParts / WebPartTransformerAttribute.cs / 2 / 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; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved. //------------------------------------------------------------------------------ //// 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; } } } // 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
- WebPartZoneBase.cs
- SHA512.cs
- HeaderedContentControl.cs
- PenContexts.cs
- DataGridRowsPresenter.cs
- ObjectStateEntryDbDataRecord.cs
- BamlReader.cs
- IntPtr.cs
- CaseInsensitiveComparer.cs
- CalendarSelectionChangedEventArgs.cs
- TypeForwardedToAttribute.cs
- ControlPropertyNameConverter.cs
- D3DImage.cs
- RemotingException.cs
- HtmlInputPassword.cs
- Part.cs
- File.cs
- TableAutomationPeer.cs
- CodeBinaryOperatorExpression.cs
- DisableDpiAwarenessAttribute.cs
- NameValueConfigurationCollection.cs
- TypeToken.cs
- OdbcConnectionStringbuilder.cs
- BufferedGraphicsManager.cs
- ResponseStream.cs
- VersionedStream.cs
- MD5CryptoServiceProvider.cs
- TaiwanCalendar.cs
- DesignerObjectListAdapter.cs
- TypeReference.cs
- HMAC.cs
- ExpressionBuilderContext.cs
- D3DImage.cs
- XmlObjectSerializerReadContextComplexJson.cs
- AtomServiceDocumentSerializer.cs
- TextBoxView.cs
- ArrayWithOffset.cs
- DataGridViewSelectedCellCollection.cs
- Token.cs
- AbandonedMutexException.cs
- ChildDocumentBlock.cs
- ScalarRestriction.cs
- TimeIntervalCollection.cs
- XmlSchemaElement.cs
- PropertyGrid.cs
- GridPattern.cs
- TraceSwitch.cs
- UnauthorizedWebPart.cs
- BamlLocalizableResource.cs
- JapaneseLunisolarCalendar.cs
- ConfigurationStrings.cs
- TransactionTraceIdentifier.cs
- WebPartDeleteVerb.cs
- Journaling.cs
- SplitterPanelDesigner.cs
- SocketManager.cs
- UserControlCodeDomTreeGenerator.cs
- Int16.cs
- AppModelKnownContentFactory.cs
- TextParagraphCache.cs
- ISessionStateStore.cs
- StylusCollection.cs
- ComponentConverter.cs
- PackageStore.cs
- IpcClientManager.cs
- RadioButtonRenderer.cs
- SmtpSection.cs
- StylusPlugInCollection.cs
- WorkflowWebHostingModule.cs
- Stopwatch.cs
- DictionaryContent.cs
- UnsafeNativeMethods.cs
- DataTableTypeConverter.cs
- StatusBarAutomationPeer.cs
- SiteMapNode.cs
- ResXBuildProvider.cs
- NumericExpr.cs
- TraceUtility.cs
- InkSerializer.cs
- ProcessHostServerConfig.cs
- SiteIdentityPermission.cs
- Int64AnimationBase.cs
- SocketElement.cs
- ToolStripOverflow.cs
- SudsCommon.cs
- TypedTableBaseExtensions.cs
- SpeechUI.cs
- TemplateNodeContextMenu.cs
- LongValidator.cs
- SessionEndedEventArgs.cs
- CatalogPartCollection.cs
- CodeSnippetCompileUnit.cs
- DataGridViewElement.cs
- TitleStyle.cs
- BoundPropertyEntry.cs
- WebPartDisplayMode.cs
- FolderLevelBuildProviderAppliesToAttribute.cs
- DataSource.cs
- TextParagraphView.cs
- GridProviderWrapper.cs