Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / xsp / System / Web / UI / DataSourceHelper.cs / 1305376 / DataSourceHelper.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Web.UI { using System; using System.Collections; using System.ComponentModel; using System.ComponentModel.Design; using System.Data; internal sealed class DataSourceHelper { private DataSourceHelper() { } internal static IEnumerable GetResolvedDataSource(object dataSource, string dataMember) { if (dataSource == null) return null; IListSource listSource = dataSource as IListSource; if (listSource != null) { IList memberList = listSource.GetList(); if (listSource.ContainsListCollection == false) { // the returned list is itself the list we need to bind to // NOTE: I am ignoring the DataMember parameter... ideally we might have // thrown an exception, but this would mess up design-time usage // where the user may change the data source from a DataSet to a // DataTable. return (IEnumerable)memberList; } if ((memberList != null) && (memberList is ITypedList)) { ITypedList typedMemberList = (ITypedList)memberList; PropertyDescriptorCollection propDescs = typedMemberList.GetItemProperties(new PropertyDescriptor[0]); if ((propDescs != null) && (propDescs.Count != 0)) { PropertyDescriptor listProperty = null; if (String.IsNullOrEmpty(dataMember)) { listProperty = propDescs[0]; } else { listProperty = propDescs.Find(dataMember, true); } if (listProperty != null) { object listRow = memberList[0]; object list = listProperty.GetValue(listRow); if ((list != null) && (list is IEnumerable)) { return (IEnumerable)list; } } throw new HttpException(SR.GetString(SR.ListSource_Missing_DataMember, dataMember)); } else { throw new HttpException(SR.GetString(SR.ListSource_Without_DataMembers)); } } } if (dataSource is IEnumerable) { return (IEnumerable)dataSource; } return null; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Web.UI { using System; using System.Collections; using System.ComponentModel; using System.ComponentModel.Design; using System.Data; internal sealed class DataSourceHelper { private DataSourceHelper() { } internal static IEnumerable GetResolvedDataSource(object dataSource, string dataMember) { if (dataSource == null) return null; IListSource listSource = dataSource as IListSource; if (listSource != null) { IList memberList = listSource.GetList(); if (listSource.ContainsListCollection == false) { // the returned list is itself the list we need to bind to // NOTE: I am ignoring the DataMember parameter... ideally we might have // thrown an exception, but this would mess up design-time usage // where the user may change the data source from a DataSet to a // DataTable. return (IEnumerable)memberList; } if ((memberList != null) && (memberList is ITypedList)) { ITypedList typedMemberList = (ITypedList)memberList; PropertyDescriptorCollection propDescs = typedMemberList.GetItemProperties(new PropertyDescriptor[0]); if ((propDescs != null) && (propDescs.Count != 0)) { PropertyDescriptor listProperty = null; if (String.IsNullOrEmpty(dataMember)) { listProperty = propDescs[0]; } else { listProperty = propDescs.Find(dataMember, true); } if (listProperty != null) { object listRow = memberList[0]; object list = listProperty.GetValue(listRow); if ((list != null) && (list is IEnumerable)) { return (IEnumerable)list; } } throw new HttpException(SR.GetString(SR.ListSource_Missing_DataMember, dataMember)); } else { throw new HttpException(SR.GetString(SR.ListSource_Without_DataMembers)); } } } if (dataSource is IEnumerable) { return (IEnumerable)dataSource; } return null; } } } // 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
- TriggerBase.cs
- FamilyTypefaceCollection.cs
- VSDExceptions.cs
- TraceInternal.cs
- RadioButtonBaseAdapter.cs
- EmptyStringExpandableObjectConverter.cs
- DbLambda.cs
- TextRangeAdaptor.cs
- DataGridViewCellCancelEventArgs.cs
- ResourceDisplayNameAttribute.cs
- PrintDialogException.cs
- Compress.cs
- RsaKeyGen.cs
- GcHandle.cs
- FontFamilyConverter.cs
- CheckBoxList.cs
- AssemblyNameProxy.cs
- PeerName.cs
- ToolStripLocationCancelEventArgs.cs
- WindowPattern.cs
- XsltArgumentList.cs
- ParserContext.cs
- Highlights.cs
- BrowsableAttribute.cs
- ClientRuntimeConfig.cs
- XmlDataCollection.cs
- SrgsGrammarCompiler.cs
- hresults.cs
- MetadataSerializer.cs
- TemplateBuilder.cs
- FlagPanel.cs
- BamlRecordReader.cs
- SurrogateEncoder.cs
- OleDbConnectionInternal.cs
- XmlSchemaAny.cs
- SqlCacheDependency.cs
- UIInitializationException.cs
- Win32MouseDevice.cs
- DataBinding.cs
- Switch.cs
- Nodes.cs
- GeneralTransform3D.cs
- TableRow.cs
- HtmlElement.cs
- TakeQueryOptionExpression.cs
- EntitySqlQueryCacheKey.cs
- DateTimeOffset.cs
- EntityDataSourceEntitySetNameItem.cs
- ConsoleEntryPoint.cs
- IProvider.cs
- TextAnchor.cs
- ListViewEditEventArgs.cs
- OledbConnectionStringbuilder.cs
- DelegatingConfigHost.cs
- FloaterBaseParagraph.cs
- recordstatescratchpad.cs
- XamlToRtfParser.cs
- HiddenFieldPageStatePersister.cs
- RowToFieldTransformer.cs
- IdnMapping.cs
- ImageClickEventArgs.cs
- NativeMethodsCLR.cs
- SqlInternalConnection.cs
- MouseWheelEventArgs.cs
- IdentityManager.cs
- QuotedPairReader.cs
- TypeReference.cs
- EventData.cs
- HttpAsyncResult.cs
- QueryConverter.cs
- HttpPostedFile.cs
- SyndicationSerializer.cs
- OperationSelectorBehavior.cs
- ListenerSessionConnection.cs
- CfgSemanticTag.cs
- SystemIPv6InterfaceProperties.cs
- TextEditorLists.cs
- TextRenderingModeValidation.cs
- UpDownEvent.cs
- IfAction.cs
- RectIndependentAnimationStorage.cs
- VerificationAttribute.cs
- RegexCharClass.cs
- HiddenFieldPageStatePersister.cs
- XmlQualifiedNameTest.cs
- InstanceDescriptor.cs
- FixedPageAutomationPeer.cs
- UpdateRecord.cs
- SecurityKeyUsage.cs
- SafeThemeHandle.cs
- X509Certificate2.cs
- ColorIndependentAnimationStorage.cs
- BooleanFunctions.cs
- ImagingCache.cs
- DrawingContextWalker.cs
- PropertySourceInfo.cs
- TargetParameterCountException.cs
- ClassicBorderDecorator.cs
- FormViewPageEventArgs.cs
- InstanceCollisionException.cs