Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / Data / System / Data / RelationshipConverter.cs / 1 / 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. // Copyright (c) Microsoft Corporation. All rights reserved.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- InputProcessorProfiles.cs
- ConnectionsZone.cs
- SqlMetaData.cs
- SerializationSectionGroup.cs
- DataColumnChangeEvent.cs
- BuildTopDownAttribute.cs
- SelectionManager.cs
- XpsSerializationManagerAsync.cs
- Columns.cs
- BitmapEffectInputData.cs
- DynamicResourceExtension.cs
- StreamResourceInfo.cs
- ChildDocumentBlock.cs
- RequestCachePolicy.cs
- PrtTicket_Base.cs
- SqlExpander.cs
- DataSourceConverter.cs
- SchemaInfo.cs
- HttpModule.cs
- HtmlTitle.cs
- MessageBox.cs
- ReaderWriterLock.cs
- PropertyTab.cs
- SiteMapHierarchicalDataSourceView.cs
- Button.cs
- MergePropertyDescriptor.cs
- Point4DValueSerializer.cs
- ExceptionHelpers.cs
- CharacterShapingProperties.cs
- ChangeTracker.cs
- Funcletizer.cs
- RecipientServiceModelSecurityTokenRequirement.cs
- WinEventTracker.cs
- Pens.cs
- HScrollProperties.cs
- AccessorTable.cs
- figurelength.cs
- path.cs
- BufferModesCollection.cs
- ObjectConverter.cs
- BaseHashHelper.cs
- EmbeddedMailObject.cs
- Span.cs
- ErrorHandlerModule.cs
- DataRelationPropertyDescriptor.cs
- ClientSession.cs
- NotifyInputEventArgs.cs
- Vector3DIndependentAnimationStorage.cs
- SpanIndex.cs
- XmlEncoding.cs
- XmlSchemaSimpleTypeRestriction.cs
- RIPEMD160Managed.cs
- CustomLineCap.cs
- ApplicationHost.cs
- ExtensionElement.cs
- OleDbFactory.cs
- QuerySelectOp.cs
- DBSchemaTable.cs
- ShutDownListener.cs
- PixelFormatConverter.cs
- PageBuildProvider.cs
- ReverseInheritProperty.cs
- LayoutEvent.cs
- ByteAnimation.cs
- BinaryExpression.cs
- ValueSerializerAttribute.cs
- HyperLink.cs
- Pair.cs
- ListItem.cs
- ApplicationHost.cs
- _CookieModule.cs
- UrlPath.cs
- ResourceExpressionBuilder.cs
- AttachedPropertyBrowsableForChildrenAttribute.cs
- Point3DKeyFrameCollection.cs
- XmlSchemaAll.cs
- StrokeNodeData.cs
- IgnoreFileBuildProvider.cs
- RenameRuleObjectDialog.Designer.cs
- TextProperties.cs
- SplineKeyFrames.cs
- PenCursorManager.cs
- Source.cs
- initElementDictionary.cs
- MailDefinitionBodyFileNameEditor.cs
- InputScope.cs
- DecimalStorage.cs
- CodeNamespace.cs
- ScrollChrome.cs
- PopupControlService.cs
- SystemWebExtensionsSectionGroup.cs
- DataGridViewColumnHeaderCell.cs
- UnsafeNativeMethods.cs
- CodeTypeReferenceCollection.cs
- CultureSpecificStringDictionary.cs
- XmlNamespaceManager.cs
- UInt32Storage.cs
- AsymmetricKeyExchangeFormatter.cs
- SendSecurityHeaderElementContainer.cs
- CodeCommentStatementCollection.cs