Code:
/ Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / whidbey / NetFXspW7 / ndp / fx / src / Data / System / Data / ConstraintConverter.cs / 1 / ConstraintConverter.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 ConstraintConverter : ExpandableObjectConverter { // converter classes should have public ctor public ConstraintConverter() { } ////// 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"); } if (destinationType == typeof(InstanceDescriptor) && value is Constraint) { if (value is UniqueConstraint) { UniqueConstraint constr = (UniqueConstraint)value; System.Reflection.ConstructorInfo ctor = typeof(UniqueConstraint).GetConstructor(new Type[] { typeof(string), typeof(string[]), typeof(bool) } ); if (ctor != null) return new InstanceDescriptor(ctor, new object[] { constr.ConstraintName, constr.ColumnNames, constr.IsPrimaryKey }); } else { ForeignKeyConstraint constr = (ForeignKeyConstraint)value; System.Reflection.ConstructorInfo ctor = typeof(ForeignKeyConstraint).GetConstructor(new Type[] { typeof(string), typeof(string), typeof(string[]), typeof(string[]), typeof(AcceptRejectRule), typeof(Rule), typeof(Rule) } ); if (ctor != null) return new InstanceDescriptor(ctor, new object[] { constr.ConstraintName, constr.ParentKey.Table.TableName, constr.ParentColumnNames, constr.ChildColumnNames, constr.AcceptRejectRule, constr.DeleteRule, constr.UpdateRule }); } } 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 ConstraintConverter : ExpandableObjectConverter { // converter classes should have public ctor public ConstraintConverter() { } ////// 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"); } if (destinationType == typeof(InstanceDescriptor) && value is Constraint) { if (value is UniqueConstraint) { UniqueConstraint constr = (UniqueConstraint)value; System.Reflection.ConstructorInfo ctor = typeof(UniqueConstraint).GetConstructor(new Type[] { typeof(string), typeof(string[]), typeof(bool) } ); if (ctor != null) return new InstanceDescriptor(ctor, new object[] { constr.ConstraintName, constr.ColumnNames, constr.IsPrimaryKey }); } else { ForeignKeyConstraint constr = (ForeignKeyConstraint)value; System.Reflection.ConstructorInfo ctor = typeof(ForeignKeyConstraint).GetConstructor(new Type[] { typeof(string), typeof(string), typeof(string[]), typeof(string[]), typeof(AcceptRejectRule), typeof(Rule), typeof(Rule) } ); if (ctor != null) return new InstanceDescriptor(ctor, new object[] { constr.ConstraintName, constr.ParentKey.Table.TableName, constr.ParentColumnNames, constr.ChildColumnNames, constr.AcceptRejectRule, constr.DeleteRule, constr.UpdateRule }); } } 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
- DoubleCollectionConverter.cs
- SchemaCollectionCompiler.cs
- HtmlElementCollection.cs
- RedirectionProxy.cs
- ByteStreamGeometryContext.cs
- DbParameterCollectionHelper.cs
- XsltSettings.cs
- WindowsPrincipal.cs
- DataGridViewColumnCollection.cs
- CodeThrowExceptionStatement.cs
- GridLengthConverter.cs
- xmlsaver.cs
- unsafenativemethodsother.cs
- CodeArrayIndexerExpression.cs
- MemberAccessException.cs
- ListSourceHelper.cs
- EntityTypeEmitter.cs
- EdmToObjectNamespaceMap.cs
- WindowsStatic.cs
- BaseProcessor.cs
- Crypto.cs
- CompoundFileStreamReference.cs
- HitTestWithGeometryDrawingContextWalker.cs
- DeploymentExceptionMapper.cs
- WebDisplayNameAttribute.cs
- SessionIDManager.cs
- BuildManagerHost.cs
- WebServiceEnumData.cs
- SurrogateSelector.cs
- SafeCryptHandles.cs
- DataGridViewRowConverter.cs
- DbInsertCommandTree.cs
- ScriptingAuthenticationServiceSection.cs
- SectionVisual.cs
- OleDbStruct.cs
- HttpBrowserCapabilitiesWrapper.cs
- Clipboard.cs
- RawKeyboardInputReport.cs
- TemplatePagerField.cs
- XmlSchemaIdentityConstraint.cs
- XmlNamespaceMappingCollection.cs
- AccessViolationException.cs
- EnumMember.cs
- DataRowExtensions.cs
- SchemaNamespaceManager.cs
- LogicalChannel.cs
- ListViewVirtualItemsSelectionRangeChangedEvent.cs
- InvokePatternIdentifiers.cs
- DateTimeConstantAttribute.cs
- DbDataSourceEnumerator.cs
- ChildrenQuery.cs
- ReflectPropertyDescriptor.cs
- EncoderFallback.cs
- ClientFormsAuthenticationCredentials.cs
- HttpHandlerAction.cs
- Invariant.cs
- DiscreteKeyFrames.cs
- Crypto.cs
- FunctionNode.cs
- DocumentSequenceHighlightLayer.cs
- FileEnumerator.cs
- EntityCommandExecutionException.cs
- GridViewEditEventArgs.cs
- AnimationStorage.cs
- AssociationTypeEmitter.cs
- SettingsBindableAttribute.cs
- DataServiceQueryOfT.cs
- TickBar.cs
- VisualTarget.cs
- future.cs
- TdsParserSafeHandles.cs
- WebPartTransformerCollection.cs
- cookiecontainer.cs
- MessageDescriptionCollection.cs
- Permission.cs
- TextTreeUndoUnit.cs
- ProjectionRewriter.cs
- XmlArrayAttribute.cs
- Module.cs
- MemoryRecordBuffer.cs
- EventMappingSettingsCollection.cs
- IndentTextWriter.cs
- FormsAuthenticationEventArgs.cs
- Transform.cs
- CharacterMetrics.cs
- TreeWalkHelper.cs
- SoapFault.cs
- AutoGeneratedField.cs
- LineGeometry.cs
- ReceiveReply.cs
- _SSPIWrapper.cs
- TextHidden.cs
- CacheVirtualItemsEvent.cs
- ParserExtension.cs
- QilPatternVisitor.cs
- OdbcFactory.cs
- Assert.cs
- XPathNodeList.cs
- DataBinder.cs
- ScrollChrome.cs