Code:
/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / Orcas / QFE / wpf / src / Framework / System / Windows / Data / ValueConversionAttribute.cs / 1 / ValueConversionAttribute.cs
//---------------------------------------------------------------------------- // //// Copyright (C) Microsoft Corporation. All rights reserved. // // // Description: allows the author of a IValueConverter // to specify what source and target property types the // ValueConverter is capable of converting // // Specs: http://avalon/connecteddata/Specs/Data%20Binding.mht // //--------------------------------------------------------------------------- using System; namespace System.Windows.Data { ////// This attribute allows the author of a ////// to specify what source and target property types the ValueConverter is capable of converting. /// This meta data is useful for designer tools to help categorize and match ValueConverters. /// /// Add this custom attribute to your IValueConverter class definition. /// [AttributeUsage(AttributeTargets.Class, AllowMultiple = true)] public sealed class ValueConversionAttribute : Attribute { //----------------------------------------------------- // // Constructors // //----------------------------------------------------- ////// [ValueConversion(typeof(Employee), typeof(Brush))] /// class MyConverter : IValueConverter /// { /// public object Convert(object value, Type targetType, object parameter, CultureInfo culture) /// { /// if (value is Dev) return Brushes.Beige; /// if (value is Employee) return Brushes.Salmon; /// return Brushes.Yellow; /// } /// } ///
////// Creates a new ValueConversionAttribute to indicate between /// what types of a data binding source and target this ValueConverter can convert. /// /// the expected source type this ValueConverter can handle /// the target type to which this ValueConverter can convert to public ValueConversionAttribute(Type sourceType, Type targetType) { if (sourceType == null) throw new ArgumentNullException("sourceType"); if (targetType == null) throw new ArgumentNullException("targetType"); _sourceType = sourceType; _targetType = targetType; } ////// The expected source type this ValueConverter can handle. /// public Type SourceType { get { return _sourceType; } } ////// The target type to which this ValueConverter can convert to. /// public Type TargetType { get { return _targetType; } } ////// The type of the optional ValueConverter Parameter object. /// public Type ParameterType { get { return _parameterType; } set { _parameterType = value; } } ////// Returns the unique identifier for this Attribute. /// // Type ID is used to remove redundant attributes by // putting all attributes in a dictionary of [TypeId, Attribute]. // If you want AllowMultiple attributes to work with designers, // you must override TypeId. The default implementation returns // this.GetType(), which is appropriate for AllowMultiple = false, but // not for AllowMultiple = true; public override object TypeId { // the attribute itself will be used as a key to the dictionary get { return this; } } ////// Returns the hash code for this instance. /// override public int GetHashCode() { // the default implementation does some funky enumeration over its fields // we can do better and use the 2 mandatory fields source/targetType's hash codes return _sourceType.GetHashCode() + _targetType.GetHashCode(); } //-------------------------------------------- // Private members //-------------------------------------------- private Type _sourceType; private Type _targetType; private Type _parameterType; } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved. //---------------------------------------------------------------------------- // //// Copyright (C) Microsoft Corporation. All rights reserved. // // // Description: allows the author of a IValueConverter // to specify what source and target property types the // ValueConverter is capable of converting // // Specs: http://avalon/connecteddata/Specs/Data%20Binding.mht // //--------------------------------------------------------------------------- using System; namespace System.Windows.Data { ////// This attribute allows the author of a ////// to specify what source and target property types the ValueConverter is capable of converting. /// This meta data is useful for designer tools to help categorize and match ValueConverters. /// /// Add this custom attribute to your IValueConverter class definition. /// [AttributeUsage(AttributeTargets.Class, AllowMultiple = true)] public sealed class ValueConversionAttribute : Attribute { //----------------------------------------------------- // // Constructors // //----------------------------------------------------- ////// [ValueConversion(typeof(Employee), typeof(Brush))] /// class MyConverter : IValueConverter /// { /// public object Convert(object value, Type targetType, object parameter, CultureInfo culture) /// { /// if (value is Dev) return Brushes.Beige; /// if (value is Employee) return Brushes.Salmon; /// return Brushes.Yellow; /// } /// } ///
////// Creates a new ValueConversionAttribute to indicate between /// what types of a data binding source and target this ValueConverter can convert. /// /// the expected source type this ValueConverter can handle /// the target type to which this ValueConverter can convert to public ValueConversionAttribute(Type sourceType, Type targetType) { if (sourceType == null) throw new ArgumentNullException("sourceType"); if (targetType == null) throw new ArgumentNullException("targetType"); _sourceType = sourceType; _targetType = targetType; } ////// The expected source type this ValueConverter can handle. /// public Type SourceType { get { return _sourceType; } } ////// The target type to which this ValueConverter can convert to. /// public Type TargetType { get { return _targetType; } } ////// The type of the optional ValueConverter Parameter object. /// public Type ParameterType { get { return _parameterType; } set { _parameterType = value; } } ////// Returns the unique identifier for this Attribute. /// // Type ID is used to remove redundant attributes by // putting all attributes in a dictionary of [TypeId, Attribute]. // If you want AllowMultiple attributes to work with designers, // you must override TypeId. The default implementation returns // this.GetType(), which is appropriate for AllowMultiple = false, but // not for AllowMultiple = true; public override object TypeId { // the attribute itself will be used as a key to the dictionary get { return this; } } ////// Returns the hash code for this instance. /// override public int GetHashCode() { // the default implementation does some funky enumeration over its fields // we can do better and use the 2 mandatory fields source/targetType's hash codes return _sourceType.GetHashCode() + _targetType.GetHashCode(); } //-------------------------------------------- // Private members //-------------------------------------------- private Type _sourceType; private Type _targetType; private Type _parameterType; } } // 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
- ExceptionUtil.cs
- Identifier.cs
- SqlConnectionFactory.cs
- WebConfigurationManager.cs
- diagnosticsswitches.cs
- TransformerConfigurationWizardBase.cs
- C14NUtil.cs
- SoapExtensionTypeElementCollection.cs
- ScrollBar.cs
- TypefaceMap.cs
- DBDataPermission.cs
- ZipArchive.cs
- VectorAnimationUsingKeyFrames.cs
- DataTemplateKey.cs
- CustomAttributeSerializer.cs
- ContainerFilterService.cs
- XPathNavigatorKeyComparer.cs
- DateTimeValueSerializer.cs
- RemoteX509Token.cs
- FileChangesMonitor.cs
- XpsS0ValidatingLoader.cs
- SeekStoryboard.cs
- GlobalItem.cs
- FieldDescriptor.cs
- XPathDocumentIterator.cs
- DataObjectPastingEventArgs.cs
- Vector3DConverter.cs
- TraceContext.cs
- ControlAdapter.cs
- StackSpiller.cs
- SecurityTokenProvider.cs
- TreeViewImageKeyConverter.cs
- SystemThemeKey.cs
- ToolStripItem.cs
- RuleRef.cs
- AssociatedControlConverter.cs
- TextServicesDisplayAttribute.cs
- XPathNode.cs
- streamingZipPartStream.cs
- ControlCollection.cs
- DesignerAutoFormatStyle.cs
- Point4D.cs
- FixedSOMElement.cs
- ProbeDuplexAsyncResult.cs
- XmlSchemaImport.cs
- HttpInputStream.cs
- SourceFileInfo.cs
- FormatConvertedBitmap.cs
- versioninfo.cs
- HtmlTextArea.cs
- DigitalSignatureProvider.cs
- ModelItemExtensions.cs
- BookmarkScopeManager.cs
- GlyphCollection.cs
- DependencyObjectPropertyDescriptor.cs
- AsyncCompletedEventArgs.cs
- Message.cs
- DbParameterHelper.cs
- WebServiceClientProxyGenerator.cs
- ClientTarget.cs
- FillErrorEventArgs.cs
- ColumnWidthChangingEvent.cs
- FixedHighlight.cs
- ChtmlLinkAdapter.cs
- DataGridViewRowHeightInfoPushedEventArgs.cs
- DataStorage.cs
- OledbConnectionStringbuilder.cs
- TriggerCollection.cs
- References.cs
- PermissionAttributes.cs
- RuntimeTransactionHandle.cs
- GrowingArray.cs
- ParserHooks.cs
- PlatformNotSupportedException.cs
- FormViewDesigner.cs
- InheritanceRules.cs
- InfoCardRSACryptoProvider.cs
- PrintDialogDesigner.cs
- DocumentCollection.cs
- RegisteredExpandoAttribute.cs
- UndirectedGraph.cs
- EntityKeyElement.cs
- XPathNodeList.cs
- StatusBar.cs
- PinnedBufferMemoryStream.cs
- X509SubjectKeyIdentifierClause.cs
- BatchWriter.cs
- MeasurementDCInfo.cs
- ADConnectionHelper.cs
- TemplateBindingExtension.cs
- SettingsPropertyIsReadOnlyException.cs
- TypeContext.cs
- RecoverInstanceLocksCommand.cs
- TransmissionStrategy.cs
- StringAnimationUsingKeyFrames.cs
- DesignTimeResourceProviderFactoryAttribute.cs
- Rotation3DAnimation.cs
- Enum.cs
- BitmapImage.cs
- Variant.cs