Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / xsp / System / Web / UI / WebControls / unitconverter.cs / 1305376 / unitconverter.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Web.UI.WebControls { using System; using System.ComponentModel; using System.ComponentModel.Design.Serialization; using System.Globalization; using System.Reflection; using System.Web.Util; public class UnitConverter : TypeConverter { ////// /// Returns a value indicating whether the unit converter can /// convert from the specified source type. /// public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType) { if (sourceType == typeof(string)) { return true; } else { return base.CanConvertFrom(context, sourceType); } } ////// /// Returns a value indicating whether the converter can /// convert to the specified destination type. /// public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType) { if ((destinationType == typeof(string)) || (destinationType == typeof(InstanceDescriptor))) { return true; } else { return base.CanConvertTo(context, destinationType); } } ////// /// Performs type conversion from the given value into a Unit. /// public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value) { if (value == null) return null; string stringValue = value as string; if (stringValue != null) { string textValue = stringValue.Trim(); if (textValue.Length == 0) { return Unit.Empty; } if (culture != null) { return Unit.Parse(textValue, culture); } else { return Unit.Parse(textValue, CultureInfo.CurrentCulture); } } else { return base.ConvertFrom(context, culture, value); } } ////// /// Performs type conversion to the specified destination type /// public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType) { if (destinationType == typeof(string)) { if ((value == null) || ((Unit)value).IsEmpty) return String.Empty; else return ((Unit)value).ToString(culture); } else if ((destinationType == typeof(InstanceDescriptor)) && (value != null)) { Unit u = (Unit)value; MemberInfo member = null; object[] args = null; if (u.IsEmpty) { member = typeof(Unit).GetField("Empty"); } else { member = typeof(Unit).GetConstructor(new Type[] { typeof(double), typeof(UnitType) }); args = new object[] { u.Value, u.Type }; } Debug.Assert(member != null, "Looks like we're missing Unit.Empty or Unit::ctor(double, UnitType)"); if (member != null) { return new InstanceDescriptor(member, args); } else { return null; } } else { 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
- MsmqException.cs
- MetadataItemCollectionFactory.cs
- HttpVersion.cs
- HtmlInputCheckBox.cs
- HwndProxyElementProvider.cs
- SamlConditions.cs
- SiteOfOriginContainer.cs
- RuntimeConfig.cs
- SerialStream.cs
- EpmContentDeSerializer.cs
- XmlSchemaChoice.cs
- TranslateTransform.cs
- SyndicationItem.cs
- HuffmanTree.cs
- ProfileManager.cs
- ObjectTag.cs
- PaintEvent.cs
- X509Certificate.cs
- CalendarDay.cs
- ACL.cs
- StronglyTypedResourceBuilder.cs
- TypeSemantics.cs
- QilGeneratorEnv.cs
- HMACMD5.cs
- UpdateRecord.cs
- COM2FontConverter.cs
- PeerObject.cs
- FieldBuilder.cs
- objectquery_tresulttype.cs
- SystemThemeKey.cs
- CommentEmitter.cs
- CodeAttributeArgument.cs
- XmlSequenceWriter.cs
- IdentityValidationException.cs
- HistoryEventArgs.cs
- ZipIOCentralDirectoryDigitalSignature.cs
- RoutedPropertyChangedEventArgs.cs
- StaticFileHandler.cs
- TreeNodeBinding.cs
- PassportAuthenticationModule.cs
- GridLength.cs
- WeakReference.cs
- ToolTipService.cs
- VectorAnimation.cs
- ChangeTracker.cs
- ActiveXContainer.cs
- UIElement.cs
- WebPartConnectionsConnectVerb.cs
- StatusBarItemAutomationPeer.cs
- TextPointer.cs
- VirtualDirectoryMapping.cs
- CodeIdentifiers.cs
- Validator.cs
- DrawingVisualDrawingContext.cs
- RoleService.cs
- BuildProviderAppliesToAttribute.cs
- PopupRootAutomationPeer.cs
- XomlCompilerError.cs
- ReaderWriterLockSlim.cs
- ServicePointManagerElement.cs
- MetadataItemSerializer.cs
- ToolStripPanel.cs
- NavigationPropertyEmitter.cs
- ConnectionsZoneDesigner.cs
- CriticalExceptions.cs
- EventlogProvider.cs
- ReaderContextStackData.cs
- ObjectDataSourceDisposingEventArgs.cs
- RuleAttributes.cs
- RefreshPropertiesAttribute.cs
- DragStartedEventArgs.cs
- TargetParameterCountException.cs
- PrivateFontCollection.cs
- Int32Rect.cs
- ClockController.cs
- ControlOperationInvoker.cs
- OracleDataReader.cs
- TreeViewImageIndexConverter.cs
- EllipseGeometry.cs
- EdmToObjectNamespaceMap.cs
- AttributeQuery.cs
- ElementHostPropertyMap.cs
- RealizationDrawingContextWalker.cs
- Root.cs
- RoleService.cs
- SessionStateSection.cs
- Point.cs
- UnescapedXmlDiagnosticData.cs
- ActiveXSite.cs
- DataKey.cs
- FixedSOMSemanticBox.cs
- EtwTrace.cs
- ControlLocalizer.cs
- TcpAppDomainProtocolHandler.cs
- XhtmlBasicLiteralTextAdapter.cs
- Misc.cs
- ExceptionNotification.cs
- ValueExpressions.cs
- UIElementAutomationPeer.cs
- ClickablePoint.cs