Code:
/ Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / Orcas / NetFXw7 / ndp / fx / src / DataWebControls / System / Data / WebControls / EntityDataSourceWrapperCollection.cs / 1 / EntityDataSourceWrapperCollection.cs
//---------------------------------------------------------------------- //// Copyright (c) Microsoft Corporation. All rights reserved. // // // @owner [....] // @backupOwner [....] //--------------------------------------------------------------------- using System; using System.Data; using System.Configuration; using System.Linq; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.HtmlControls; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Collections; using System.ComponentModel; using System.Collections.Generic; using System.Data.Metadata.Edm; using System.Data.Mapping; using System.Data.Objects; using System.Reflection; using System.Diagnostics; using System.Data.Common; using System.Data.Objects.DataClasses; using System.Globalization; using System.Data.EntityClient; using System.Collections.ObjectModel; namespace System.Web.UI.WebControls { ////// Summary description for EntityDataSourceWrapperCollection /// internal class EntityDataSourceWrapperCollection : IEnumerable, ICollection, ITypedList { private readonly ObjectContext _context; private readonly List_wrapperList; /// /// Gets the property descriptors exposed to the user. /// private readonly PropertyDescriptorCollection _visiblePropertyDescriptors; ////// Gets all property descriptors. /// internal readonly ReadOnlyCollectionAllPropertyDescriptors; private readonly bool _isReadOnly; private readonly Type _clrEntityType; internal EntityDataSourceWrapperCollection(ObjectContext context, EntitySet entitySet, EntityType restrictedEntityType) { EntityDataSourceUtil.CheckArgumentNull(context, "context"); EntityDataSourceUtil.CheckArgumentNull(entitySet, "entitySet"); _context = context; _wrapperList = new List (); // get handles on the relevant workspaces MetadataWorkspace csWorkspace = ((EntityConnection)context.Connection).GetMetadataWorkspace(); MetadataWorkspace ocWorkspace = context.MetadataWorkspace; // if no restricted type is given, we assume the entity set element type is exposed EntityType entityType = restrictedEntityType ?? entitySet.ElementType; _clrEntityType = EntityDataSourceUtil.GetClrType(ocWorkspace, entityType); // if no restricted type is given and the set is polymorphic, make the collection readonly if (null == restrictedEntityType && 1 < EntityDataSourceUtil.GetTypeAndSubtypesOf(entityType, csWorkspace.GetItemCollection(DataSpace.CSpace), true).Count()) { _isReadOnly = true; } // gather the properties Type componentType = EntityDataSourceUtil.GetClrType(context.MetadataWorkspace, entityType); ReadOnlyCollection columns = EntityDataSourceUtil.GetNamedColumns(csWorkspace, ocWorkspace, entitySet, entityType); List visiblePropertyDescriptors = new List (columns.Count); List propertyDescriptors = new List (columns.Count); foreach (EntityDataSourceColumn column in columns) { var descriptor = new EntityDataSourceWrapperPropertyDescriptor(this, column); propertyDescriptors.Add(descriptor); // if the descriptor does not have a dependent, it is exposed to the user if (!descriptor.Column.IsHidden) { visiblePropertyDescriptors.Add(descriptor); } } _visiblePropertyDescriptors = new PropertyDescriptorCollection(visiblePropertyDescriptors.ToArray(), true); AllPropertyDescriptors = propertyDescriptors.AsReadOnly(); } internal EntityDataSourceWrapper AddWrappedEntity(object entity) { EntityDataSourceWrapper wrapper = new EntityDataSourceWrapper(this, entity); this._wrapperList.Add(wrapper); return wrapper; } #region IEnumerable Implementation IEnumerator IEnumerable.GetEnumerator() { return this._wrapperList.GetEnumerator(); } #endregion IEnumerable Implementation #region ICollection Implementation public int Count { get { return this._wrapperList.Count; } } public void CopyTo(Array array, int index) { ((ICollection)this._wrapperList).CopyTo(array, index); } public bool IsSynchronized { get { return false; } } public object SyncRoot { get { return null; } } #endregion #region ITypedList Implementation public PropertyDescriptorCollection GetItemProperties(PropertyDescriptor[] listAccessors) { if (null == listAccessors) { return this._visiblePropertyDescriptors ; } else { return null;// Implement this feature when we support traversing collections. } } string ITypedList.GetListName(PropertyDescriptor[] listAccessors) { return null; } #endregion #region Internal properties /// /// Gets CLR type or base type for entities exposed in this collection. /// internal Type ClrEntityType { get { return _clrEntityType; } } ////// Indicates whether this configuration supports modifications. /// internal bool IsReadOnly { get { return _isReadOnly; } } ////// Gets object context tracking the contents of this collection. /// internal ObjectContext Context { get { return _context; } } #endregion } } // 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.Linq; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.HtmlControls; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Collections; using System.ComponentModel; using System.Collections.Generic; using System.Data.Metadata.Edm; using System.Data.Mapping; using System.Data.Objects; using System.Reflection; using System.Diagnostics; using System.Data.Common; using System.Data.Objects.DataClasses; using System.Globalization; using System.Data.EntityClient; using System.Collections.ObjectModel; namespace System.Web.UI.WebControls { ////// Summary description for EntityDataSourceWrapperCollection /// internal class EntityDataSourceWrapperCollection : IEnumerable, ICollection, ITypedList { private readonly ObjectContext _context; private readonly List_wrapperList; /// /// Gets the property descriptors exposed to the user. /// private readonly PropertyDescriptorCollection _visiblePropertyDescriptors; ////// Gets all property descriptors. /// internal readonly ReadOnlyCollectionAllPropertyDescriptors; private readonly bool _isReadOnly; private readonly Type _clrEntityType; internal EntityDataSourceWrapperCollection(ObjectContext context, EntitySet entitySet, EntityType restrictedEntityType) { EntityDataSourceUtil.CheckArgumentNull(context, "context"); EntityDataSourceUtil.CheckArgumentNull(entitySet, "entitySet"); _context = context; _wrapperList = new List (); // get handles on the relevant workspaces MetadataWorkspace csWorkspace = ((EntityConnection)context.Connection).GetMetadataWorkspace(); MetadataWorkspace ocWorkspace = context.MetadataWorkspace; // if no restricted type is given, we assume the entity set element type is exposed EntityType entityType = restrictedEntityType ?? entitySet.ElementType; _clrEntityType = EntityDataSourceUtil.GetClrType(ocWorkspace, entityType); // if no restricted type is given and the set is polymorphic, make the collection readonly if (null == restrictedEntityType && 1 < EntityDataSourceUtil.GetTypeAndSubtypesOf(entityType, csWorkspace.GetItemCollection(DataSpace.CSpace), true).Count()) { _isReadOnly = true; } // gather the properties Type componentType = EntityDataSourceUtil.GetClrType(context.MetadataWorkspace, entityType); ReadOnlyCollection columns = EntityDataSourceUtil.GetNamedColumns(csWorkspace, ocWorkspace, entitySet, entityType); List visiblePropertyDescriptors = new List (columns.Count); List propertyDescriptors = new List (columns.Count); foreach (EntityDataSourceColumn column in columns) { var descriptor = new EntityDataSourceWrapperPropertyDescriptor(this, column); propertyDescriptors.Add(descriptor); // if the descriptor does not have a dependent, it is exposed to the user if (!descriptor.Column.IsHidden) { visiblePropertyDescriptors.Add(descriptor); } } _visiblePropertyDescriptors = new PropertyDescriptorCollection(visiblePropertyDescriptors.ToArray(), true); AllPropertyDescriptors = propertyDescriptors.AsReadOnly(); } internal EntityDataSourceWrapper AddWrappedEntity(object entity) { EntityDataSourceWrapper wrapper = new EntityDataSourceWrapper(this, entity); this._wrapperList.Add(wrapper); return wrapper; } #region IEnumerable Implementation IEnumerator IEnumerable.GetEnumerator() { return this._wrapperList.GetEnumerator(); } #endregion IEnumerable Implementation #region ICollection Implementation public int Count { get { return this._wrapperList.Count; } } public void CopyTo(Array array, int index) { ((ICollection)this._wrapperList).CopyTo(array, index); } public bool IsSynchronized { get { return false; } } public object SyncRoot { get { return null; } } #endregion #region ITypedList Implementation public PropertyDescriptorCollection GetItemProperties(PropertyDescriptor[] listAccessors) { if (null == listAccessors) { return this._visiblePropertyDescriptors ; } else { return null;// Implement this feature when we support traversing collections. } } string ITypedList.GetListName(PropertyDescriptor[] listAccessors) { return null; } #endregion #region Internal properties /// /// Gets CLR type or base type for entities exposed in this collection. /// internal Type ClrEntityType { get { return _clrEntityType; } } ////// Indicates whether this configuration supports modifications. /// internal bool IsReadOnly { get { return _isReadOnly; } } ////// Gets object context tracking the contents of this collection. /// internal ObjectContext Context { get { return _context; } } #endregion } } // 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
- DataKeyCollection.cs
- ConfigXmlSignificantWhitespace.cs
- ToolStripSettings.cs
- SHA1Managed.cs
- FrameworkElementAutomationPeer.cs
- HideDisabledControlAdapter.cs
- ModuleBuilder.cs
- ExpandSegment.cs
- hwndwrapper.cs
- UpDownBase.cs
- AsyncCompletedEventArgs.cs
- TypeNameConverter.cs
- RangeContentEnumerator.cs
- ConfigXmlWhitespace.cs
- ApplicationSecurityInfo.cs
- DesignerTextWriter.cs
- TypeBuilderInstantiation.cs
- ToolStripItemEventArgs.cs
- NavigationFailedEventArgs.cs
- PasswordBoxAutomationPeer.cs
- NotificationContext.cs
- DynamicValidator.cs
- ControlCachePolicy.cs
- HttpModuleAction.cs
- TabRenderer.cs
- UInt64Converter.cs
- CultureInfoConverter.cs
- CodeTypeReferenceExpression.cs
- ExpressionBuilderCollection.cs
- ButtonBase.cs
- DocumentOrderQuery.cs
- ValueQuery.cs
- DbConnectionOptions.cs
- DataServiceQuery.cs
- ErrorRuntimeConfig.cs
- XmlSchemaComplexType.cs
- OutputCacheProfileCollection.cs
- SAPIEngineTypes.cs
- ZoneIdentityPermission.cs
- CodeAttributeDeclarationCollection.cs
- ImpersonationContext.cs
- WindowsProgressbar.cs
- DuplexChannelFactory.cs
- RelationshipConverter.cs
- StringWriter.cs
- CrossAppDomainChannel.cs
- TableItemProviderWrapper.cs
- TraceUtility.cs
- MaskedTextBoxTextEditorDropDown.cs
- NameValueConfigurationElement.cs
- TextDecorationLocationValidation.cs
- TextDocumentView.cs
- SlotInfo.cs
- PropertyChangedEventManager.cs
- PerfService.cs
- GenerateHelper.cs
- SystemTcpConnection.cs
- ObjectDisposedException.cs
- ExtractorMetadata.cs
- LocalFileSettingsProvider.cs
- TrustManagerMoreInformation.cs
- SQLInt16Storage.cs
- ExpressionBuilderContext.cs
- CodeAttributeDeclarationCollection.cs
- UniformGrid.cs
- EntityKey.cs
- ArglessEventHandlerProxy.cs
- DiagnosticTrace.cs
- ListBase.cs
- ThreadInterruptedException.cs
- WindowsListViewGroup.cs
- ProofTokenCryptoHandle.cs
- Serialization.cs
- Brush.cs
- SystemResourceKey.cs
- PropertyGeneratedEventArgs.cs
- RegexWriter.cs
- CheckedListBox.cs
- SortDescription.cs
- HyperLinkStyle.cs
- DocumentViewerAutomationPeer.cs
- AssemblyCollection.cs
- DataServiceProcessingPipelineEventArgs.cs
- COM2Enum.cs
- ReferencedAssemblyResolver.cs
- DbException.cs
- GeometryConverter.cs
- CompilationUtil.cs
- DynamicFilter.cs
- Point3DCollection.cs
- InheritanceRules.cs
- XmlSchemaAll.cs
- PEFileReader.cs
- ToolStripControlHost.cs
- DataPagerField.cs
- EndpointNameMessageFilter.cs
- EnlistmentTraceIdentifier.cs
- sqlcontext.cs
- XmlUtil.cs
- ToolboxItem.cs