Code:
/ Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / whidbey / NetFXspW7 / 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); } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //------------------------------------------------------------------------------ //// 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); } } } } // 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
- DynamicMetaObject.cs
- SqlGenerator.cs
- WebPartMinimizeVerb.cs
- Setter.cs
- NavigatingCancelEventArgs.cs
- DataFieldCollectionEditor.cs
- PointIndependentAnimationStorage.cs
- SqlDependency.cs
- ImmComposition.cs
- ServiceRouteHandler.cs
- SimpleBitVector32.cs
- MLangCodePageEncoding.cs
- InvalidContentTypeException.cs
- NamespaceDecl.cs
- PaperSource.cs
- GridViewRowPresenterBase.cs
- StructuredTypeInfo.cs
- SQLMoneyStorage.cs
- CustomAttributeFormatException.cs
- OutputCacheModule.cs
- HttpUnhandledOperationInvoker.cs
- SamlAuthorizationDecisionClaimResource.cs
- SchemaType.cs
- SafeCancelMibChangeNotify.cs
- ApplicationCommands.cs
- SqlXml.cs
- TraceSection.cs
- DataGridRelationshipRow.cs
- UICuesEvent.cs
- Exception.cs
- DropTarget.cs
- XmlRawWriter.cs
- FolderBrowserDialog.cs
- TypeName.cs
- xml.cs
- KeyValuePair.cs
- DebuggerAttributes.cs
- BinHexEncoder.cs
- MarkerProperties.cs
- PermissionSetTriple.cs
- DisplayInformation.cs
- PropertyToken.cs
- ResourceExpressionEditorSheet.cs
- returneventsaver.cs
- PrintPreviewGraphics.cs
- DefaultValueConverter.cs
- BroadcastEventHelper.cs
- ControllableStoryboardAction.cs
- GridViewRowPresenterBase.cs
- DbDataSourceEnumerator.cs
- ComplexBindingPropertiesAttribute.cs
- SafeFileMappingHandle.cs
- RouteValueDictionary.cs
- KnownTypeDataContractResolver.cs
- ChannelSettingsElement.cs
- WorkflowItemPresenter.cs
- LocalIdCollection.cs
- Int32RectValueSerializer.cs
- ListView.cs
- DataTableReaderListener.cs
- Point.cs
- EntityCommandExecutionException.cs
- SqlBulkCopy.cs
- CompilerScopeManager.cs
- ScrollChangedEventArgs.cs
- LinkClickEvent.cs
- ToolStripOverflow.cs
- _NestedSingleAsyncResult.cs
- HttpModuleActionCollection.cs
- ChannelDemuxer.cs
- PropertyPathConverter.cs
- GlyphRunDrawing.cs
- DiagnosticTrace.cs
- OletxCommittableTransaction.cs
- EntitySqlQueryState.cs
- XmlSubtreeReader.cs
- XmlSchemaCompilationSettings.cs
- TextLineBreak.cs
- ButtonFlatAdapter.cs
- CapabilitiesSection.cs
- CompileLiteralTextParser.cs
- XhtmlTextWriter.cs
- FlowPosition.cs
- AuthenticationManager.cs
- QuaternionIndependentAnimationStorage.cs
- FontFamilyConverter.cs
- Debug.cs
- securitycriticaldataformultiplegetandset.cs
- returneventsaver.cs
- XMLDiffLoader.cs
- TreeNodeEventArgs.cs
- DesignerVerbCollection.cs
- SystemIPInterfaceProperties.cs
- CodeNamespace.cs
- InheritanceRules.cs
- COM2ComponentEditor.cs
- XmlEnumAttribute.cs
- OrderedDictionary.cs
- AdRotator.cs
- ToolStripDropDown.cs