Code:
/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / whidbey / NetFxQFE / 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. // //----------------------------------------------------------------------------- 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.
Link Menu

This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- SymbolType.cs
- HtmlAnchor.cs
- SqlBooleanMismatchVisitor.cs
- QuaternionAnimation.cs
- AtomContentProperty.cs
- PreviewPrintController.cs
- ChangeNode.cs
- ServiceProviders.cs
- DataRowComparer.cs
- OptimalBreakSession.cs
- ComponentEvent.cs
- _LocalDataStoreMgr.cs
- TextLine.cs
- WindowsListViewScroll.cs
- ElementUtil.cs
- DataGridColumn.cs
- VisualBasicDesignerHelper.cs
- HtmlMeta.cs
- Error.cs
- CharUnicodeInfo.cs
- ProviderSettings.cs
- ComEventsSink.cs
- cache.cs
- CustomAttributeBuilder.cs
- Graph.cs
- TemplateField.cs
- _HelperAsyncResults.cs
- LogExtent.cs
- Point3DCollection.cs
- GradientStop.cs
- VariableDesigner.xaml.cs
- webclient.cs
- DataGridTablesFactory.cs
- MatrixTransform3D.cs
- FixUp.cs
- LayoutDump.cs
- View.cs
- AsymmetricKeyExchangeDeformatter.cs
- CredentialCache.cs
- DataGridViewCellFormattingEventArgs.cs
- AlignmentYValidation.cs
- ElapsedEventArgs.cs
- SystemException.cs
- TreeNodeCollection.cs
- EntityCommandDefinition.cs
- StreamResourceInfo.cs
- DoubleLinkList.cs
- MultipartContentParser.cs
- GridViewUpdatedEventArgs.cs
- WebBrowserBase.cs
- FilteredSchemaElementLookUpTable.cs
- InnerItemCollectionView.cs
- ComboBoxAutomationPeer.cs
- DirectoryInfo.cs
- Operator.cs
- Timer.cs
- ApplicationProxyInternal.cs
- EdgeModeValidation.cs
- __Error.cs
- EntityDataSourceQueryBuilder.cs
- SmiConnection.cs
- ComplexTypeEmitter.cs
- DateBoldEvent.cs
- WindowExtensionMethods.cs
- FileChangesMonitor.cs
- OdbcException.cs
- BindingMAnagerBase.cs
- StringUtil.cs
- HyperLinkField.cs
- PlaceHolder.cs
- ListViewGroupConverter.cs
- SourceFileBuildProvider.cs
- XmlHierarchicalDataSourceView.cs
- DbModificationClause.cs
- NetCodeGroup.cs
- SmtpAuthenticationManager.cs
- GregorianCalendar.cs
- NativeDirectoryServicesQueryAPIs.cs
- SqlDataSourceQueryEditor.cs
- TableProviderWrapper.cs
- BaseUriHelper.cs
- DataGridViewCellLinkedList.cs
- SizeAnimation.cs
- UnmanagedMemoryStream.cs
- LinkConverter.cs
- EmptyEnumerator.cs
- TextBoxDesigner.cs
- Transform.cs
- SchemaTypeEmitter.cs
- SharedStatics.cs
- Function.cs
- DataGridViewBindingCompleteEventArgs.cs
- SafeNativeMethodsCLR.cs
- GridViewColumnCollection.cs
- PrivilegeNotHeldException.cs
- ActivityDesigner.cs
- XPathSelectionIterator.cs
- IndexedGlyphRun.cs
- StyleBamlTreeBuilder.cs
- WindowsTokenRoleProvider.cs