Code:
/ FXUpdate3074 / FXUpdate3074 / 1.1 / untmp / whidbey / QFE / 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.
Link Menu

This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- SqlBuilder.cs
- InvalidAsynchronousStateException.cs
- basenumberconverter.cs
- WebPartsPersonalizationAuthorization.cs
- DesignParameter.cs
- RegularExpressionValidator.cs
- EventsTab.cs
- LogEntry.cs
- TraceListener.cs
- DoubleUtil.cs
- XmlHierarchicalDataSourceView.cs
- RegexCapture.cs
- AtomContentProperty.cs
- CompoundFileReference.cs
- SafeHandle.cs
- IdentityValidationException.cs
- ProcessManager.cs
- ListViewItem.cs
- PropertyValueChangedEvent.cs
- MultitargetUtil.cs
- DataGridBoolColumn.cs
- Type.cs
- MethodAccessException.cs
- DataGridLength.cs
- WindowsListViewItem.cs
- ProfileInfo.cs
- TemplateControl.cs
- WebSysDescriptionAttribute.cs
- DocumentManager.cs
- CharacterBufferReference.cs
- TypeDescriptionProvider.cs
- DelegatedStream.cs
- TextParagraph.cs
- Paragraph.cs
- Matrix3D.cs
- WorkflowInstanceProxy.cs
- StructuralCache.cs
- SchemaReference.cs
- ImageSourceConverter.cs
- ImmutablePropertyDescriptorGridEntry.cs
- InputLanguageCollection.cs
- RelationshipEnd.cs
- ListBindingHelper.cs
- CodeArrayCreateExpression.cs
- MachineKeySection.cs
- Rectangle.cs
- XmlUnspecifiedAttribute.cs
- AssociatedControlConverter.cs
- LayoutEvent.cs
- _HTTPDateParse.cs
- PageContent.cs
- MatrixAnimationUsingPath.cs
- unsafeIndexingFilterStream.cs
- SkipQueryOptionExpression.cs
- SchemaHelper.cs
- DPTypeDescriptorContext.cs
- UrlPropertyAttribute.cs
- DataTableExtensions.cs
- CqlParser.cs
- AnnotationDocumentPaginator.cs
- AvtEvent.cs
- Vector3DCollectionConverter.cs
- SplineQuaternionKeyFrame.cs
- UpdateCommandGenerator.cs
- RegexNode.cs
- FixUpCollection.cs
- SystemResourceHost.cs
- Pen.cs
- HttpCookie.cs
- BitmapMetadata.cs
- ViewSimplifier.cs
- TreeNodeClickEventArgs.cs
- RuntimeCompatibilityAttribute.cs
- CatalogPartDesigner.cs
- XmlArrayItemAttributes.cs
- x509store.cs
- Label.cs
- NeutralResourcesLanguageAttribute.cs
- HtmlControlPersistable.cs
- WebPartTransformer.cs
- XmlSerializerFactory.cs
- PageAsyncTask.cs
- DataPager.cs
- AxisAngleRotation3D.cs
- DataGridLinkButton.cs
- TypeSystemHelpers.cs
- SpellCheck.cs
- DiagnosticsConfiguration.cs
- PerfCounters.cs
- ControlAdapter.cs
- GC.cs
- ProtocolElement.cs
- AssemblyAttributesGoHere.cs
- Control.cs
- TouchesCapturedWithinProperty.cs
- TextRangeBase.cs
- ModifierKeysValueSerializer.cs
- WindowsIPAddress.cs
- VectorCollectionValueSerializer.cs
- SplashScreenNativeMethods.cs