Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / Data / System / Data / RelationshipConverter.cs / 1305376 / RelationshipConverter.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //[....] //[....] //----------------------------------------------------------------------------- namespace System.Data { using System; using System.ComponentModel; using System.ComponentModel.Design.Serialization; using System.Globalization; sealed internal class RelationshipConverter : ExpandableObjectConverter { // converter classes should have public ctor public RelationshipConverter() { } ////// public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType) { if (destinationType == typeof(InstanceDescriptor)) { return true; } return base.CanConvertTo(context, destinationType); } ///Gets a value indicating whether this converter can /// convert an object to the given destination type using the context. ////// Converts the given object to another type. The most common types to convert /// are to and from a string object. The default implementation will make a call /// to ToString on the object if the object is valid and if the destination /// type is string. If this cannot convert to the desitnation type, this will /// throw a NotSupportedException. /// public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType) { if (destinationType == null) { throw new ArgumentNullException("destinationType"); } System.Reflection.ConstructorInfo ctor = null; object[] values = null; if (destinationType == typeof(InstanceDescriptor) && value is DataRelation) { DataRelation rel = (DataRelation) value; DataTable parentTable = rel.ParentKey.Table; DataTable childTable = rel.ChildKey.Table; if (System.Data.Common.ADP.IsEmpty(parentTable.Namespace) && System.Data.Common.ADP.IsEmpty(childTable.Namespace)) { ctor = typeof(DataRelation).GetConstructor(new Type[] { typeof(string) /*relationName*/, typeof(string) /*parentTableName*/, typeof(string) /*childTableName */, typeof(string[]) /*parentColumnNames */, typeof(string[]) /*childColumnNames*/, typeof(bool) /*nested*/ } ); values = new object[] { rel.RelationName, rel.ParentKey.Table.TableName, rel.ChildKey.Table.TableName,rel.ParentColumnNames, rel.ChildColumnNames, rel.Nested }; } else { ctor = typeof(DataRelation).GetConstructor(new Type[] { typeof(string)/*relationName*/, typeof(string)/*parentTableName*/, typeof(string)/*parentTableNamespace*/, typeof(string)/*childTableName */, typeof(string)/*childTableNamespace */, typeof(string[])/*parentColumnNames */, typeof(string[]) /*childColumnNames*/, typeof(bool) /*nested*/} ); values = new object[] { rel.RelationName, rel.ParentKey.Table.TableName, rel.ParentKey.Table.Namespace, rel.ChildKey.Table.TableName, rel.ChildKey.Table.Namespace, rel.ParentColumnNames, rel.ChildColumnNames, rel.Nested }; } return new InstanceDescriptor(ctor, values); } return base.ConvertTo(context, culture, value, destinationType); } } } // 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
- BitmapEffectRenderDataResource.cs
- SecurityDescriptor.cs
- PasswordTextNavigator.cs
- TextCompositionManager.cs
- smtpconnection.cs
- DataGridViewAdvancedBorderStyle.cs
- HtmlTableRow.cs
- SafeRightsManagementPubHandle.cs
- Column.cs
- IOException.cs
- SAPIEngineTypes.cs
- InputMethodStateTypeInfo.cs
- SafeHandles.cs
- CompositeFontInfo.cs
- Hash.cs
- GenericUriParser.cs
- DBSqlParserTableCollection.cs
- CallbackWrapper.cs
- ShortcutKeysEditor.cs
- DBBindings.cs
- SymLanguageType.cs
- ReferenceConverter.cs
- ExtentKey.cs
- TextFormatterImp.cs
- PersonalizationProviderHelper.cs
- OutOfProcStateClientManager.cs
- SqlNotificationRequest.cs
- NotImplementedException.cs
- XmlDataSourceDesigner.cs
- BlockCollection.cs
- PersonalizationStateInfoCollection.cs
- FixedSOMContainer.cs
- DataServiceConfiguration.cs
- CfgSemanticTag.cs
- DbConnectionHelper.cs
- AttachedPropertyBrowsableAttribute.cs
- LicFileLicenseProvider.cs
- StreamingContext.cs
- EventProviderWriter.cs
- SqlTypeSystemProvider.cs
- RandomNumberGenerator.cs
- TemplateComponentConnector.cs
- Listener.cs
- DocumentViewer.cs
- FrameworkTemplate.cs
- ProvidePropertyAttribute.cs
- GraphicsState.cs
- CalendarTable.cs
- EventItfInfo.cs
- ComponentConverter.cs
- ToolStripDropDown.cs
- ProcessRequestArgs.cs
- FontNameConverter.cs
- ComboBoxAutomationPeer.cs
- XmlMapping.cs
- ProfilePropertySettings.cs
- ResourceReferenceExpression.cs
- SimpleFieldTemplateUserControl.cs
- filewebrequest.cs
- CopyOnWriteList.cs
- CodeDOMProvider.cs
- MobileComponentEditorPage.cs
- WebServiceResponse.cs
- PhonemeEventArgs.cs
- DistributedTransactionPermission.cs
- DataGridHeaderBorder.cs
- MenuItemAutomationPeer.cs
- QueryModel.cs
- XmlNamedNodeMap.cs
- StateFinalizationDesigner.cs
- AtomServiceDocumentSerializer.cs
- HttpVersion.cs
- AbstractDataSvcMapFileLoader.cs
- XmlRootAttribute.cs
- BrowserCapabilitiesCodeGenerator.cs
- DllNotFoundException.cs
- DynamicPropertyReader.cs
- AdPostCacheSubstitution.cs
- BindingExpression.cs
- AutomationIdentifier.cs
- HwndSourceKeyboardInputSite.cs
- DataAdapter.cs
- SignedInfo.cs
- SmtpReplyReader.cs
- PolicyException.cs
- QuaternionKeyFrameCollection.cs
- UInt64Storage.cs
- GenericAuthenticationEventArgs.cs
- TrustSection.cs
- TraceEventCache.cs
- ViewGenResults.cs
- SapiRecoContext.cs
- XmlReflectionImporter.cs
- ReflectionUtil.cs
- BooleanSwitch.cs
- NotificationContext.cs
- SmiMetaDataProperty.cs
- AdapterUtil.cs
- GroupStyle.cs
- MessageQueueConverter.cs