Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / Orcas / SP / ndp / fx / src / DataWebControls / System / Data / WebControls / EntityDataSourceWrapperPropertyDescriptor.cs / 3 / EntityDataSourceWrapperPropertyDescriptor.cs
//---------------------------------------------------------------------- //// Copyright (c) Microsoft Corporation. All rights reserved. // // // @owner [....] // @backupOwner [....] //--------------------------------------------------------------------- using System; using System.Data; using System.Configuration; using System.ComponentModel; using System.Data.Common; using System.Data.Metadata.Edm; using System.Reflection; using System.Data.Objects; using System.Data.Objects.DataClasses; using System.Collections.Generic; using System.Diagnostics; using System.Linq; using System.Collections.ObjectModel; using System.Text; namespace System.Web.UI.WebControls { ////// Wrapper property descriptor that handles access of nested members and /// entity reference keys. /// ////// This class essentially glues together a wrapper collection (roughly speaking /// the 'data' exposed by the control) and the column (which defines the metadata /// and behaviors for the current property). /// internal sealed class EntityDataSourceWrapperPropertyDescriptor : PropertyDescriptor { private readonly EntityDataSourceWrapperCollection _collection; private readonly EntityDataSourceColumn _column; internal EntityDataSourceWrapperPropertyDescriptor(EntityDataSourceWrapperCollection collection, EntityDataSourceColumn column) : base(EntityDataSourceUtil.CheckArgumentNull(column, "column").DisplayName, new Attribute[] { }) { EntityDataSourceUtil.CheckArgumentNull(collection, "collection"); _collection = collection; _column = column; } internal EntityDataSourceColumn Column { get { return _column; } } public override Type ComponentType { get { return _collection.ClrEntityType; } } public override bool IsReadOnly { get { return _collection.IsReadOnly || !_column.CanWrite; } } public override Type PropertyType { get { return _column.ClrType; } } public override bool CanResetValue(object component) { return false; } public override void ResetValue(object component) { throw new InvalidOperationException(Strings.ValueNotResettable(this.ComponentType.Name)); } public override object GetValue(object component) { return _column.GetValue(GetWrapper(component)); } public override void SetValue(object component, object value) { if (IsReadOnly) { throw new InvalidOperationException(Strings.SetValueNotSupported); } _column.SetValue(GetWrapper(component), value); } public override bool ShouldSerializeValue(object component) { return false; } private EntityDataSourceWrapper GetWrapper(object component) { // Validate that the component comes from the collection to which // this descriptor is bound. Elements of the collection are // non-null wrappers instances. EntityDataSourceUtil.CheckArgumentNull(component, "component"); EntityDataSourceWrapper wrapper = component as EntityDataSourceWrapper; if (null == wrapper || this._collection != wrapper.Collection) { throw new ArgumentException(Strings.ComponentNotFromProperCollection, "component"); } return wrapper; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //---------------------------------------------------------------------- //// Copyright (c) Microsoft Corporation. All rights reserved. // // // @owner [....] // @backupOwner [....] //--------------------------------------------------------------------- using System; using System.Data; using System.Configuration; using System.ComponentModel; using System.Data.Common; using System.Data.Metadata.Edm; using System.Reflection; using System.Data.Objects; using System.Data.Objects.DataClasses; using System.Collections.Generic; using System.Diagnostics; using System.Linq; using System.Collections.ObjectModel; using System.Text; namespace System.Web.UI.WebControls { ////// Wrapper property descriptor that handles access of nested members and /// entity reference keys. /// ////// This class essentially glues together a wrapper collection (roughly speaking /// the 'data' exposed by the control) and the column (which defines the metadata /// and behaviors for the current property). /// internal sealed class EntityDataSourceWrapperPropertyDescriptor : PropertyDescriptor { private readonly EntityDataSourceWrapperCollection _collection; private readonly EntityDataSourceColumn _column; internal EntityDataSourceWrapperPropertyDescriptor(EntityDataSourceWrapperCollection collection, EntityDataSourceColumn column) : base(EntityDataSourceUtil.CheckArgumentNull(column, "column").DisplayName, new Attribute[] { }) { EntityDataSourceUtil.CheckArgumentNull(collection, "collection"); _collection = collection; _column = column; } internal EntityDataSourceColumn Column { get { return _column; } } public override Type ComponentType { get { return _collection.ClrEntityType; } } public override bool IsReadOnly { get { return _collection.IsReadOnly || !_column.CanWrite; } } public override Type PropertyType { get { return _column.ClrType; } } public override bool CanResetValue(object component) { return false; } public override void ResetValue(object component) { throw new InvalidOperationException(Strings.ValueNotResettable(this.ComponentType.Name)); } public override object GetValue(object component) { return _column.GetValue(GetWrapper(component)); } public override void SetValue(object component, object value) { if (IsReadOnly) { throw new InvalidOperationException(Strings.SetValueNotSupported); } _column.SetValue(GetWrapper(component), value); } public override bool ShouldSerializeValue(object component) { return false; } private EntityDataSourceWrapper GetWrapper(object component) { // Validate that the component comes from the collection to which // this descriptor is bound. Elements of the collection are // non-null wrappers instances. EntityDataSourceUtil.CheckArgumentNull(component, "component"); EntityDataSourceWrapper wrapper = component as EntityDataSourceWrapper; if (null == wrapper || this._collection != wrapper.Collection) { throw new ArgumentException(Strings.ComponentNotFromProperCollection, "component"); } return wrapper; } } } // 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
- PropertyDescriptorCollection.cs
- ClientViaElement.cs
- DataFormats.cs
- EditorBrowsableAttribute.cs
- SymmetricAlgorithm.cs
- NetTcpBinding.cs
- GridProviderWrapper.cs
- AncillaryOps.cs
- PropertyChangedEventManager.cs
- ContractNamespaceAttribute.cs
- VariantWrapper.cs
- Utils.cs
- SqlUserDefinedTypeAttribute.cs
- ResizeBehavior.cs
- HttpContextServiceHost.cs
- XmlSchemaException.cs
- ProfileProvider.cs
- WmlLiteralTextAdapter.cs
- LogSwitch.cs
- QueueProcessor.cs
- SecureUICommand.cs
- XmlLanguageConverter.cs
- RootBrowserWindow.cs
- MemberAccessException.cs
- CompleteWizardStep.cs
- XmlMtomWriter.cs
- NullableBoolConverter.cs
- DataGridViewSelectedColumnCollection.cs
- ConsoleCancelEventArgs.cs
- _CookieModule.cs
- BaseResourcesBuildProvider.cs
- ProxySimple.cs
- TextElement.cs
- IndexOutOfRangeException.cs
- PerformanceCounterLib.cs
- OrderedDictionary.cs
- Win32Native.cs
- SBCSCodePageEncoding.cs
- ManifestSignatureInformation.cs
- _ReceiveMessageOverlappedAsyncResult.cs
- SqlInfoMessageEvent.cs
- TraceProvider.cs
- CacheOutputQuery.cs
- ScrollEventArgs.cs
- CodeEventReferenceExpression.cs
- Rect3D.cs
- IndexedEnumerable.cs
- TripleDESCryptoServiceProvider.cs
- TimeSpanOrInfiniteConverter.cs
- ContextProperty.cs
- MarkupCompilePass2.cs
- Walker.cs
- WebPartHelpVerb.cs
- FactoryMaker.cs
- DesignerActionVerbList.cs
- DataTrigger.cs
- MappedMetaModel.cs
- XsdBuilder.cs
- FieldDescriptor.cs
- ElementUtil.cs
- OneToOneMappingSerializer.cs
- XsltArgumentList.cs
- StandardCommands.cs
- ButtonPopupAdapter.cs
- ElementsClipboardData.cs
- FastEncoder.cs
- XXXInfos.cs
- MouseDevice.cs
- XmlStreamStore.cs
- DelayedRegex.cs
- ServiceContractListItemList.cs
- DebuggerAttributes.cs
- CompatibleComparer.cs
- ObservableCollection.cs
- DependencyPropertyDescriptor.cs
- RowVisual.cs
- ActivityBindForm.cs
- CalendarDay.cs
- MembershipSection.cs
- XmlSchemaComplexContentExtension.cs
- SortKey.cs
- WindowsAuthenticationModule.cs
- MenuCommandService.cs
- HyperLink.cs
- MouseEvent.cs
- HttpRuntimeSection.cs
- EdmComplexPropertyAttribute.cs
- RadioButton.cs
- LinqDataSourceContextData.cs
- FrameworkElement.cs
- FlowLayoutSettings.cs
- AlphabeticalEnumConverter.cs
- SerializationEventsCache.cs
- CalendarAutomationPeer.cs
- GAC.cs
- PageContentCollection.cs
- FlowNode.cs
- ColumnHeader.cs
- CopyOnWriteList.cs
- TypedTableBaseExtensions.cs