Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / whidbey / netfxsp / 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. // //[....] //[....] //[....] //----------------------------------------------------------------------------- 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
- EmptyElement.cs
- SmiContextFactory.cs
- SystemIcmpV4Statistics.cs
- EnumValidator.cs
- DebugController.cs
- StringDictionary.cs
- CommandLibraryHelper.cs
- WorkflowPersistenceContext.cs
- CurrencyWrapper.cs
- entityreference_tresulttype.cs
- SpeakCompletedEventArgs.cs
- Section.cs
- RuntimeEnvironment.cs
- AnnotationStore.cs
- ConfigurationLocationCollection.cs
- DataGridViewAutoSizeColumnsModeEventArgs.cs
- Compiler.cs
- GeneralTransformGroup.cs
- Queue.cs
- SafeBitVector32.cs
- LassoHelper.cs
- MSAANativeProvider.cs
- ExtensionQuery.cs
- TabControlEvent.cs
- StoreItemCollection.Loader.cs
- SecurityTokenProvider.cs
- CodeEventReferenceExpression.cs
- DataObjectFieldAttribute.cs
- ModulesEntry.cs
- InfoCardTraceRecord.cs
- XmlException.cs
- TaskExtensions.cs
- UniqueContractNameValidationBehavior.cs
- Grant.cs
- MessageDecoder.cs
- SplineKeyFrames.cs
- PasswordBox.cs
- XMLSyntaxException.cs
- InputEventArgs.cs
- CrossContextChannel.cs
- EdmProperty.cs
- QueryStringParameter.cs
- Debugger.cs
- ReflectionPermission.cs
- Substitution.cs
- Int16AnimationUsingKeyFrames.cs
- CodeSubDirectoriesCollection.cs
- EntityDataSourceStatementEditor.cs
- FixedElement.cs
- TrackingProfileDeserializationException.cs
- Rotation3DAnimationUsingKeyFrames.cs
- DependencyPropertyChangedEventArgs.cs
- Button.cs
- HtmlButton.cs
- Rotation3DAnimationUsingKeyFrames.cs
- QuadraticBezierSegment.cs
- TemplateColumn.cs
- SqlServices.cs
- DbProviderFactoriesConfigurationHandler.cs
- CloseSequence.cs
- UIElementCollection.cs
- _SecureChannel.cs
- ScrollItemProviderWrapper.cs
- XmlTextWriter.cs
- EventRouteFactory.cs
- PropertyPathWorker.cs
- Itemizer.cs
- RuleEngine.cs
- RectangleGeometry.cs
- ListControlDataBindingHandler.cs
- storepermissionattribute.cs
- ParameterCollection.cs
- XamlTemplateSerializer.cs
- TextTreeDeleteContentUndoUnit.cs
- BindableAttribute.cs
- ToolStripGripRenderEventArgs.cs
- RegexCaptureCollection.cs
- TypeSystemHelpers.cs
- BindingMemberInfo.cs
- Grant.cs
- MaterialCollection.cs
- AddDataControlFieldDialog.cs
- TypeTypeConverter.cs
- DomainConstraint.cs
- Int32.cs
- TaskHelper.cs
- LocationUpdates.cs
- DataTableNewRowEvent.cs
- ErrorWebPart.cs
- CodeDomConfigurationHandler.cs
- GetWinFXPath.cs
- ClientEventManager.cs
- IndexedEnumerable.cs
- UnsafeMethods.cs
- StringInfo.cs
- CngKeyBlobFormat.cs
- CollectionChangeEventArgs.cs
- DataGridViewCellStyleConverter.cs
- PageFunction.cs
- EntityDataSourceReferenceGroup.cs