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
- WebBrowserEvent.cs
- baseaxisquery.cs
- CodeParameterDeclarationExpressionCollection.cs
- XmlSortKey.cs
- __ConsoleStream.cs
- WindowsTitleBar.cs
- ObfuscationAttribute.cs
- SimpleNameService.cs
- CellLabel.cs
- AppDomainAttributes.cs
- BlurBitmapEffect.cs
- RichTextBoxConstants.cs
- ButtonBaseAdapter.cs
- ReadOnlyPropertyMetadata.cs
- AnyAllSearchOperator.cs
- _SSPIWrapper.cs
- DataErrorValidationRule.cs
- MimeTypeMapper.cs
- Config.cs
- CaseInsensitiveOrdinalStringComparer.cs
- EncodedStreamFactory.cs
- MetricEntry.cs
- ServiceObjectContainer.cs
- CompositeCollectionView.cs
- DataViewListener.cs
- AsyncResult.cs
- TextViewSelectionProcessor.cs
- columnmapfactory.cs
- Pen.cs
- CookielessHelper.cs
- UpdateManifestForBrowserApplication.cs
- PreservationFileReader.cs
- SettingsPropertyValue.cs
- MultipartContentParser.cs
- CriticalHandle.cs
- PropertyValueChangedEvent.cs
- AuthenticationConfig.cs
- OraclePermission.cs
- CurrencyWrapper.cs
- RightNameExpirationInfoPair.cs
- LoginName.cs
- StylusCollection.cs
- SQLGuidStorage.cs
- CursorConverter.cs
- ElementAction.cs
- CharStorage.cs
- MultipleViewPattern.cs
- NumericUpDownAccelerationCollection.cs
- DragDropManager.cs
- PropertyRef.cs
- DetailsViewRow.cs
- ByteStreamMessageEncoder.cs
- RotateTransform.cs
- BlurEffect.cs
- QueryStringParameter.cs
- CodeStatementCollection.cs
- SQLInt32Storage.cs
- SqlProcedureAttribute.cs
- Rect3D.cs
- glyphs.cs
- XmlElementElement.cs
- GlyphRun.cs
- PeerInputChannelListener.cs
- AvTrace.cs
- assemblycache.cs
- NameValueConfigurationElement.cs
- RayMeshGeometry3DHitTestResult.cs
- SecureEnvironment.cs
- XpsFilter.cs
- ListDesigner.cs
- KeyMatchBuilder.cs
- TdsParserSessionPool.cs
- MetaTableHelper.cs
- ServiceContractViewControl.cs
- StylusShape.cs
- PermissionSetEnumerator.cs
- XmlSerializerVersionAttribute.cs
- HotCommands.cs
- WindowsScrollBar.cs
- GridViewDeletedEventArgs.cs
- XhtmlBasicPanelAdapter.cs
- DataKey.cs
- SiteMapProvider.cs
- DocumentPageView.cs
- AuthorizationRuleCollection.cs
- SchemaObjectWriter.cs
- PassportIdentity.cs
- Bitmap.cs
- CodeTypeConstructor.cs
- ProcessStartInfo.cs
- DESCryptoServiceProvider.cs
- Process.cs
- XmlC14NWriter.cs
- ParseChildrenAsPropertiesAttribute.cs
- SapiInterop.cs
- EventBuilder.cs
- MenuEventArgs.cs
- ParameterToken.cs
- ActivationArguments.cs
- ServiceHostingEnvironment.cs