Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / DataSet / System / Data / TypedTableBaseExtensions.cs / 1305376 / TypedTableBaseExtensions.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //[....] //----------------------------------------------------------------------------- using System; using System.Collections.Generic; using System.Linq; using System.Linq.Expressions; using System.Globalization; using System.Diagnostics; namespace System.Data { ////// This static class defines the extension methods that add LINQ operator functionality /// within IEnumerableDT and IOrderedEnumerableDT. /// public static class TypedTableBaseExtensions { ////// LINQ's Where operator for generic EnumerableRowCollection. /// public static EnumerableRowCollectionWhere ( this TypedTableBase source, Func predicate) where TRow : DataRow { DataSetUtil.CheckArgumentNull(source, "source"); EnumerableRowCollection erc = new EnumerableRowCollection ((DataTable)source); return erc.Where (predicate); } /// /// LINQ's OrderBy operator for generic EnumerableRowCollection. /// public static OrderedEnumerableRowCollectionOrderBy ( this TypedTableBase source, Func keySelector) where TRow : DataRow { DataSetUtil.CheckArgumentNull(source, "source"); EnumerableRowCollection erc = new EnumerableRowCollection ((DataTable)source); return erc.OrderBy (keySelector); } /// /// LINQ's OrderBy operator for generic EnumerableRowCollection. /// public static OrderedEnumerableRowCollectionOrderBy ( this TypedTableBase source, Func keySelector, IComparer comparer) where TRow : DataRow { DataSetUtil.CheckArgumentNull(source, "source"); EnumerableRowCollection erc = new EnumerableRowCollection ((DataTable)source); return erc.OrderBy (keySelector, comparer); } /// /// LINQ's OrderByDescending operator for generic EnumerableRowCollection. /// public static OrderedEnumerableRowCollectionOrderByDescending ( this TypedTableBase source, Func keySelector) where TRow : DataRow { DataSetUtil.CheckArgumentNull(source, "source"); EnumerableRowCollection erc = new EnumerableRowCollection ((DataTable)source); return erc.OrderByDescending (keySelector); } /// /// LINQ's OrderByDescending operator for generic EnumerableRowCollection. /// public static OrderedEnumerableRowCollectionOrderByDescending ( this TypedTableBase source, Func keySelector, IComparer comparer) where TRow : DataRow { DataSetUtil.CheckArgumentNull(source, "source"); EnumerableRowCollection erc = new EnumerableRowCollection ((DataTable)source); return erc.OrderByDescending (keySelector, comparer); } /// /// Executes a Select (Projection) on EnumerableDataTable. If the selector returns a different /// type than the type of rows, then AsLinqDataView is disabled, and the returning EnumerableDataTable /// represents an enumerable over the LINQ Query. /// public static EnumerableRowCollectionSelect( this TypedTableBase source, Func selector) where TRow : DataRow { DataSetUtil.CheckArgumentNull(source, "source"); EnumerableRowCollection erc = new EnumerableRowCollection ((DataTable)source); return erc.Select (selector); } /// /// This method returns a IEnumerable of TRow. /// /// /// The source DataTable to make enumerable. /// ////// IEnumerable of datarows. /// public static EnumerableRowCollectionAsEnumerable (this TypedTableBase source) where TRow : DataRow { DataSetUtil.CheckArgumentNull(source, "source"); return new EnumerableRowCollection (source as DataTable); } } //end class } // 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
- HyperLinkField.cs
- WebPartTransformerAttribute.cs
- BackgroundWorker.cs
- cookie.cs
- RecordBuilder.cs
- HyperLinkStyle.cs
- ValidationSummary.cs
- QueryProcessor.cs
- GregorianCalendarHelper.cs
- Control.cs
- ButtonChrome.cs
- CodeArrayCreateExpression.cs
- View.cs
- WebPartHeaderCloseVerb.cs
- SQLByteStorage.cs
- AbsoluteQuery.cs
- RecommendedAsConfigurableAttribute.cs
- ServicePointManager.cs
- DrawingContextWalker.cs
- Oci.cs
- ErrorWebPart.cs
- VirtualizingStackPanel.cs
- MenuItemAutomationPeer.cs
- StatusBarItemAutomationPeer.cs
- TextFormatterContext.cs
- XmlIlVisitor.cs
- QilStrConcat.cs
- URL.cs
- RangeValidator.cs
- MissingSatelliteAssemblyException.cs
- MimeMultiPart.cs
- SoundPlayer.cs
- SymLanguageVendor.cs
- HostedImpersonationContext.cs
- DrawingContextDrawingContextWalker.cs
- ManagedWndProcTracker.cs
- TabRenderer.cs
- TreeNodeSelectionProcessor.cs
- ListItemParagraph.cs
- HostingPreferredMapPath.cs
- InitiatorSessionSymmetricMessageSecurityProtocol.cs
- NeutralResourcesLanguageAttribute.cs
- GridViewRowCollection.cs
- ResumeStoryboard.cs
- DurableInstancingOptions.cs
- OutputCacheModule.cs
- InternalRelationshipCollection.cs
- DynamicValidatorEventArgs.cs
- ProbeMatchesMessage11.cs
- PersistChildrenAttribute.cs
- ContainerVisual.cs
- PersonalizationStateInfoCollection.cs
- SchemaCreator.cs
- WebPartDisplayMode.cs
- TextRangeSerialization.cs
- LocalizedNameDescriptionPair.cs
- SmtpNetworkElement.cs
- TcpChannelHelper.cs
- userdatakeys.cs
- SizeF.cs
- figurelengthconverter.cs
- SchemaDeclBase.cs
- LocatorPart.cs
- Base64Stream.cs
- ReadOnlyCollection.cs
- DbConnectionPoolIdentity.cs
- WizardStepBase.cs
- _SslStream.cs
- PathGradientBrush.cs
- CustomPeerResolverService.cs
- Paragraph.cs
- HeaderCollection.cs
- ControllableStoryboardAction.cs
- GeneralTransform3DGroup.cs
- BadImageFormatException.cs
- RuntimeEnvironment.cs
- X509CertificateStore.cs
- OperatingSystem.cs
- WebBrowserNavigatedEventHandler.cs
- FilterEventArgs.cs
- CompilationRelaxations.cs
- FlowLayoutSettings.cs
- ComplexTypeEmitter.cs
- AssemblyAttributes.cs
- DragCompletedEventArgs.cs
- UnmanagedMarshal.cs
- SizeAnimation.cs
- ComponentResourceManager.cs
- FlowDocumentReaderAutomationPeer.cs
- BinHexDecoder.cs
- SoapSchemaImporter.cs
- ColorConvertedBitmapExtension.cs
- TabControl.cs
- ObservableDictionary.cs
- CompoundFileStreamReference.cs
- Internal.cs
- WebBrowsableAttribute.cs
- WsdlBuildProvider.cs
- BaseDataBoundControl.cs
- SemanticTag.cs