Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / 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; } } } }
Link Menu
![Network programming in C#, Network Programming in VB.NET, Network Programming in .NET](/images/book.jpg)
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- MeshGeometry3D.cs
- IDReferencePropertyAttribute.cs
- ImageDrawing.cs
- Geometry.cs
- Serializer.cs
- RangeContentEnumerator.cs
- GC.cs
- NavigationWindowAutomationPeer.cs
- TemplateXamlParser.cs
- RuleSettingsCollection.cs
- MsmqIntegrationElement.cs
- InternalBufferOverflowException.cs
- VersionPair.cs
- XmlTextReaderImpl.cs
- CatalogZoneBase.cs
- CacheOutputQuery.cs
- MarshalByRefObject.cs
- DispatcherHookEventArgs.cs
- TemplateBindingExtension.cs
- SchemaEntity.cs
- ComponentChangedEvent.cs
- IdentityManager.cs
- ValidationResult.cs
- RuleSettingsCollection.cs
- ObjectViewListener.cs
- counter.cs
- NameValueConfigurationElement.cs
- RegexWriter.cs
- DataGridTablesFactory.cs
- ModuleBuilder.cs
- LocalizableAttribute.cs
- PropertyIDSet.cs
- XmlNodeList.cs
- WebProxyScriptElement.cs
- CodeMemberField.cs
- Geometry.cs
- ClientSettingsSection.cs
- ReflectionTypeLoadException.cs
- IndentTextWriter.cs
- ExtenderProviderService.cs
- BrushMappingModeValidation.cs
- XmlSchemaValidator.cs
- ColorAnimation.cs
- AliasGenerator.cs
- ConfigXmlSignificantWhitespace.cs
- ToolTip.cs
- EmptyEnumerator.cs
- _DigestClient.cs
- FormViewDeleteEventArgs.cs
- EmptyControlCollection.cs
- XmlDeclaration.cs
- HostVisual.cs
- WebPartConnectionsEventArgs.cs
- DataService.cs
- ComplexTypeEmitter.cs
- DelegateSerializationHolder.cs
- xml.cs
- TextShapeableCharacters.cs
- WebDisplayNameAttribute.cs
- SqlUnionizer.cs
- DrawingContextWalker.cs
- HttpDictionary.cs
- returneventsaver.cs
- XmlEventCache.cs
- SqlUdtInfo.cs
- PropertiesTab.cs
- CategoryGridEntry.cs
- ArrayList.cs
- TextParaLineResult.cs
- _ContextAwareResult.cs
- CompiledAction.cs
- OdbcParameterCollection.cs
- COM2DataTypeToManagedDataTypeConverter.cs
- GestureRecognitionResult.cs
- SizeConverter.cs
- KerberosSecurityTokenAuthenticator.cs
- ViewCellRelation.cs
- _RequestCacheProtocol.cs
- SecureStringHasher.cs
- HttpProfileBase.cs
- DuplicateWaitObjectException.cs
- VSDExceptions.cs
- FrameAutomationPeer.cs
- WinInetCache.cs
- ColorBuilder.cs
- Code.cs
- DBBindings.cs
- ConfigXmlAttribute.cs
- QueryableDataSourceHelper.cs
- ReliabilityContractAttribute.cs
- SQLDateTimeStorage.cs
- BamlLocalizationDictionary.cs
- GroupBox.cs
- SchemaTypeEmitter.cs
- HtmlWindowCollection.cs
- AccessViolationException.cs
- GroupItemAutomationPeer.cs
- Events.cs
- InstancePersistenceCommandException.cs
- ConfigurationManagerHelper.cs