Code:
/ FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / fx / src / xsp / System / Web / UI / WebControls / unitconverter.cs / 1 / 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.Security.Permissions; using System.Web.Util; [AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)] [AspNetHostingPermission(SecurityAction.InheritanceDemand, Level=AspNetHostingPermissionLevel.Minimal)] 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); } } } }
Link Menu

This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- DoubleCollectionValueSerializer.cs
- HttpCacheParams.cs
- DesignTimeTemplateParser.cs
- XsdCachingReader.cs
- QuaternionAnimation.cs
- HyperLinkField.cs
- SynchronizingStream.cs
- StateFinalizationDesigner.cs
- XmlEntityReference.cs
- ForAllOperator.cs
- PointIndependentAnimationStorage.cs
- OLEDB_Enum.cs
- DynamicPropertyReader.cs
- SQLDecimal.cs
- ToolStripSettings.cs
- XPathAncestorQuery.cs
- ZipIOCentralDirectoryFileHeader.cs
- AutomationElement.cs
- X509Certificate.cs
- InternalDuplexBindingElement.cs
- PerspectiveCamera.cs
- PatternMatcher.cs
- PermissionToken.cs
- LinqDataSource.cs
- CustomAttribute.cs
- EntityCollection.cs
- InvariantComparer.cs
- DataView.cs
- NetworkAddressChange.cs
- SubMenuStyle.cs
- storepermissionattribute.cs
- AnimationClockResource.cs
- WindowsTreeView.cs
- ConfigurationFileMap.cs
- RoleManagerSection.cs
- TouchFrameEventArgs.cs
- WindowsFormsDesignerOptionService.cs
- GroupBoxAutomationPeer.cs
- GetWinFXPath.cs
- HtmlTextViewAdapter.cs
- PackageRelationshipCollection.cs
- TreeView.cs
- OutputCacheProfile.cs
- ComponentChangingEvent.cs
- ParallelDesigner.cs
- WrappingXamlSchemaContext.cs
- NavigationPropertySingletonExpression.cs
- EntityDataSourceContainerNameConverter.cs
- ProtocolsConfiguration.cs
- DriveInfo.cs
- DataServiceResponse.cs
- SafeLibraryHandle.cs
- PointAnimationClockResource.cs
- CodeStatement.cs
- ProfessionalColors.cs
- ViewValidator.cs
- OrderedDictionaryStateHelper.cs
- followingsibling.cs
- OracleDateTime.cs
- SimpleWorkerRequest.cs
- NamedPipeActivation.cs
- smtpconnection.cs
- CultureTable.cs
- TextCompositionManager.cs
- DynamicRendererThreadManager.cs
- DataBoundControlHelper.cs
- ObjectCloneHelper.cs
- _DomainName.cs
- CharStorage.cs
- WrappedIUnknown.cs
- ValueConversionAttribute.cs
- XmlLoader.cs
- ObjectDataSourceMethodEventArgs.cs
- Triplet.cs
- SoapHeaders.cs
- FrameworkObject.cs
- SimpleExpression.cs
- FrameworkObject.cs
- QuaternionValueSerializer.cs
- SchemaImporterExtensionElement.cs
- SqlDelegatedTransaction.cs
- StructuredProperty.cs
- LambdaCompiler.Expressions.cs
- BitmapCacheBrush.cs
- RoleManagerModule.cs
- GradientStopCollection.cs
- HitTestParameters3D.cs
- XmlTextEncoder.cs
- Compilation.cs
- SqlHelper.cs
- XmlILAnnotation.cs
- ThousandthOfEmRealDoubles.cs
- DbConnectionPoolCounters.cs
- StreamResourceInfo.cs
- TraceSwitch.cs
- ResourceAssociationTypeEnd.cs
- PermissionListSet.cs
- TypeSystem.cs
- DataTransferEventArgs.cs
- OdbcParameterCollection.cs