Code:
/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / whidbey / NetFxQFE / 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
- ImageFormatConverter.cs
- VarInfo.cs
- _ConnectStream.cs
- ProfileGroupSettings.cs
- InputLanguageCollection.cs
- ImageAutomationPeer.cs
- XmlSchemaAny.cs
- Repeater.cs
- TreeIterator.cs
- ObjectDataProvider.cs
- DynamicContractTypeBuilder.cs
- ClientSideProviderDescription.cs
- TargetInvocationException.cs
- HistoryEventArgs.cs
- StrongNameIdentityPermission.cs
- DataServiceQueryOfT.cs
- xml.cs
- TableChangeProcessor.cs
- QilXmlWriter.cs
- DataGridViewCellErrorTextNeededEventArgs.cs
- DesignRelation.cs
- SwitchAttribute.cs
- UMPAttributes.cs
- CodeAccessPermission.cs
- BackgroundWorker.cs
- PeerTransportListenAddressValidator.cs
- MissingFieldException.cs
- ResourceReferenceKeyNotFoundException.cs
- XamlInterfaces.cs
- Quaternion.cs
- dsa.cs
- JoinElimination.cs
- StateMachineHelpers.cs
- LocationFactory.cs
- StringFreezingAttribute.cs
- WebHttpBindingCollectionElement.cs
- CancelRequestedRecord.cs
- DataGridItemAutomationPeer.cs
- HttpCookiesSection.cs
- ObsoleteAttribute.cs
- TranslateTransform3D.cs
- DoubleAnimationBase.cs
- MapPathBasedVirtualPathProvider.cs
- UnaryQueryOperator.cs
- NativeMethods.cs
- MissingFieldException.cs
- CellTreeNodeVisitors.cs
- ThaiBuddhistCalendar.cs
- Padding.cs
- UseLicense.cs
- BooleanExpr.cs
- MultipartIdentifier.cs
- DataSetViewSchema.cs
- ADMembershipUser.cs
- StylusSystemGestureEventArgs.cs
- IPGlobalProperties.cs
- TransportManager.cs
- SqlDataSourceCommandEventArgs.cs
- ToolStripContainerDesigner.cs
- ConfigurationLocation.cs
- CollectionEditVerbManager.cs
- InvalidDataException.cs
- XmlAttributeOverrides.cs
- StylusPointProperties.cs
- CommentEmitter.cs
- XhtmlBasicValidationSummaryAdapter.cs
- TextRenderer.cs
- LineGeometry.cs
- Bitmap.cs
- RNGCryptoServiceProvider.cs
- ComponentCollection.cs
- SqlConnectionStringBuilder.cs
- ScriptResourceAttribute.cs
- DetailsViewDeletedEventArgs.cs
- Pair.cs
- ObjectContext.cs
- TraceInternal.cs
- MenuAdapter.cs
- brushes.cs
- XmlSchemaInclude.cs
- ArgumentOutOfRangeException.cs
- InkCanvasSelectionAdorner.cs
- CmsInterop.cs
- DbConnectionPool.cs
- XpsS0ValidatingLoader.cs
- DataControlImageButton.cs
- XmlSerializationReader.cs
- ColorPalette.cs
- DataGridViewRowHeightInfoNeededEventArgs.cs
- ConfigurationPropertyCollection.cs
- CodeDirectoryCompiler.cs
- TemplateColumn.cs
- SBCSCodePageEncoding.cs
- OdbcParameterCollection.cs
- XmlElement.cs
- SerializationInfo.cs
- ProcessStartInfo.cs
- XmlSchemaComplexContent.cs
- XmlSortKeyAccumulator.cs
- ClosableStream.cs