Code:
/ FXUpdate3074 / FXUpdate3074 / 1.1 / DEVDIV / depot / DevDiv / releases / whidbey / QFE / ndp / fx / src / xsp / System / Web / UI / ListSourceHelper.cs / 1 / ListSourceHelper.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Web.UI { using System.Collections; using System.ComponentModel; using System.Security.Permissions; [AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)] public static class ListSourceHelper { public static bool ContainsListCollection(IDataSource dataSource) { ICollection viewNames = dataSource.GetViewNames(); if (viewNames != null && viewNames.Count > 0) { return true; } return false; } public static IList GetList(IDataSource dataSource) { ICollection viewNames = dataSource.GetViewNames(); if (viewNames != null && viewNames.Count > 0) { return new ListSourceList(dataSource); } return null; } internal sealed class ListSourceList : CollectionBase, ITypedList { IDataSource _dataSource; public ListSourceList(IDataSource dataSource) { _dataSource = dataSource; ((IList)this).Add(new ListSourceRow(_dataSource)); } #region ITypedList implementation string ITypedList.GetListName(PropertyDescriptor[] listAccessors) { return String.Empty; } PropertyDescriptorCollection ITypedList.GetItemProperties(PropertyDescriptor[] listAccessors) { if (_dataSource != null) { ICollection viewNames = _dataSource.GetViewNames(); if (viewNames != null && viewNames.Count > 0) { string[] viewNamesArray = new string[viewNames.Count]; viewNames.CopyTo(viewNamesArray, 0); PropertyDescriptor[] props = new PropertyDescriptor[viewNames.Count]; for (int i = 0; i < viewNamesArray.Length; i++) { props[i] = new ListSourcePropertyDescriptor(viewNamesArray[i]); } return new PropertyDescriptorCollection(props); } } return new PropertyDescriptorCollection(null); } #endregion ITypedList implementations } internal class ListSourceRow { IDataSource _dataSource; public ListSourceRow(IDataSource dataSource) { _dataSource = dataSource; } public IDataSource DataSource { get { return _dataSource; } } } internal class ListSourcePropertyDescriptor : PropertyDescriptor { string _name; public ListSourcePropertyDescriptor(string name) : base(name, null) { _name = name; } public override Type ComponentType { get { return typeof(ListSourceRow); } } public override bool IsReadOnly { get { return true; } } public override Type PropertyType { get { return typeof(IEnumerable); } } public override bool CanResetValue(object value) { return false; } public override object GetValue(object source) { if (source is ListSourceRow) { ListSourceRow row = (ListSourceRow)source; IDataSource dataSource = row.DataSource; return dataSource.GetView(_name).ExecuteSelect(DataSourceSelectArguments.Empty); } return null; } public override void ResetValue(object component) { throw new NotSupportedException(); } public override void SetValue(object component, object value) { throw new NotSupportedException(); } public override bool ShouldSerializeValue(object component) { return false; } } } } // 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 { using System.Collections; using System.ComponentModel; using System.Security.Permissions; [AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)] public static class ListSourceHelper { public static bool ContainsListCollection(IDataSource dataSource) { ICollection viewNames = dataSource.GetViewNames(); if (viewNames != null && viewNames.Count > 0) { return true; } return false; } public static IList GetList(IDataSource dataSource) { ICollection viewNames = dataSource.GetViewNames(); if (viewNames != null && viewNames.Count > 0) { return new ListSourceList(dataSource); } return null; } internal sealed class ListSourceList : CollectionBase, ITypedList { IDataSource _dataSource; public ListSourceList(IDataSource dataSource) { _dataSource = dataSource; ((IList)this).Add(new ListSourceRow(_dataSource)); } #region ITypedList implementation string ITypedList.GetListName(PropertyDescriptor[] listAccessors) { return String.Empty; } PropertyDescriptorCollection ITypedList.GetItemProperties(PropertyDescriptor[] listAccessors) { if (_dataSource != null) { ICollection viewNames = _dataSource.GetViewNames(); if (viewNames != null && viewNames.Count > 0) { string[] viewNamesArray = new string[viewNames.Count]; viewNames.CopyTo(viewNamesArray, 0); PropertyDescriptor[] props = new PropertyDescriptor[viewNames.Count]; for (int i = 0; i < viewNamesArray.Length; i++) { props[i] = new ListSourcePropertyDescriptor(viewNamesArray[i]); } return new PropertyDescriptorCollection(props); } } return new PropertyDescriptorCollection(null); } #endregion ITypedList implementations } internal class ListSourceRow { IDataSource _dataSource; public ListSourceRow(IDataSource dataSource) { _dataSource = dataSource; } public IDataSource DataSource { get { return _dataSource; } } } internal class ListSourcePropertyDescriptor : PropertyDescriptor { string _name; public ListSourcePropertyDescriptor(string name) : base(name, null) { _name = name; } public override Type ComponentType { get { return typeof(ListSourceRow); } } public override bool IsReadOnly { get { return true; } } public override Type PropertyType { get { return typeof(IEnumerable); } } public override bool CanResetValue(object value) { return false; } public override object GetValue(object source) { if (source is ListSourceRow) { ListSourceRow row = (ListSourceRow)source; IDataSource dataSource = row.DataSource; return dataSource.GetView(_name).ExecuteSelect(DataSourceSelectArguments.Empty); } return null; } public override void ResetValue(object component) { throw new NotSupportedException(); } public override void SetValue(object component, object value) { throw new NotSupportedException(); } public override bool ShouldSerializeValue(object component) { return false; } } } } // 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
- DesignerLoader.cs
- DeclarativeCatalogPartDesigner.cs
- XPathQueryGenerator.cs
- DescendantBaseQuery.cs
- EntityKey.cs
- CollectionViewGroupInternal.cs
- PerSessionInstanceContextProvider.cs
- Rotation3DKeyFrameCollection.cs
- Vector3DAnimationBase.cs
- FileNotFoundException.cs
- BinaryQueryOperator.cs
- EntityDataReader.cs
- DataBoundControlHelper.cs
- SrgsRuleRef.cs
- XmlDataImplementation.cs
- BaseInfoTable.cs
- StatusBarItem.cs
- SelectionRangeConverter.cs
- PaginationProgressEventArgs.cs
- SchemaImporterExtension.cs
- DataReceivedEventArgs.cs
- AstTree.cs
- Transform.cs
- TextSpanModifier.cs
- PeerNeighborManager.cs
- MethodAccessException.cs
- HyperLinkColumn.cs
- CqlIdentifiers.cs
- ConfigurationPropertyCollection.cs
- RSAPKCS1SignatureDeformatter.cs
- AutomationPeer.cs
- MultiplexingDispatchMessageFormatter.cs
- CounterSample.cs
- EndpointDiscoveryMetadata11.cs
- HttpClientProtocol.cs
- Semaphore.cs
- AssemblyAttributes.cs
- PlanCompilerUtil.cs
- ListDependantCardsRequest.cs
- DaylightTime.cs
- TcpConnectionPoolSettings.cs
- RuleSetReference.cs
- DES.cs
- DesignerUtility.cs
- ColumnMapCopier.cs
- LinqDataSourceContextData.cs
- RowUpdatedEventArgs.cs
- FolderLevelBuildProviderCollection.cs
- DataBoundLiteralControl.cs
- HwndSourceParameters.cs
- MappingItemCollection.cs
- ForeignKeyFactory.cs
- EdmComplexPropertyAttribute.cs
- NumericExpr.cs
- NamespaceDisplay.xaml.cs
- StringCollection.cs
- ToolStripSystemRenderer.cs
- PrintPreviewDialog.cs
- MachineSettingsSection.cs
- ChildTable.cs
- DispatcherObject.cs
- CodeSubDirectoriesCollection.cs
- indexingfiltermarshaler.cs
- SiteMapDataSource.cs
- ProfilePropertyMetadata.cs
- UpdateCommand.cs
- Point3DValueSerializer.cs
- XmlQualifiedName.cs
- WindowsStartMenu.cs
- DataGridViewAddColumnDialog.cs
- DataGridViewRowEventArgs.cs
- EntitySqlException.cs
- ReadOnlyNameValueCollection.cs
- SynchronizedRandom.cs
- PingOptions.cs
- ListBoxItemAutomationPeer.cs
- ConversionHelper.cs
- LocatorGroup.cs
- CheckBoxList.cs
- DataGridHeadersVisibilityToVisibilityConverter.cs
- Duration.cs
- ObjectParameter.cs
- ExclusiveTcpTransportManager.cs
- ToolBarButtonClickEvent.cs
- ApplicationHost.cs
- AbstractSvcMapFileLoader.cs
- ScriptingScriptResourceHandlerSection.cs
- GridProviderWrapper.cs
- Panel.cs
- RawStylusInputReport.cs
- DataSourceSelectArguments.cs
- LicenseManager.cs
- LocalFileSettingsProvider.cs
- MediaElementAutomationPeer.cs
- DependencyPropertyKind.cs
- MenuItem.cs
- XdrBuilder.cs
- safesecurityhelperavalon.cs
- TraceRecord.cs
- InstancePersistenceCommand.cs