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
- MatrixCamera.cs
- DataBoundControlAdapter.cs
- HtmlTableRow.cs
- HttpRuntime.cs
- ClientSponsor.cs
- EntityType.cs
- ObjectManager.cs
- PLINQETWProvider.cs
- TextOptions.cs
- ValueExpressions.cs
- BooleanProjectedSlot.cs
- SqlUserDefinedAggregateAttribute.cs
- AttributeConverter.cs
- SqlBuffer.cs
- FontSource.cs
- RadioButtonRenderer.cs
- ComPlusTypeValidator.cs
- ReadContentAsBinaryHelper.cs
- StructuredTypeEmitter.cs
- ScriptingProfileServiceSection.cs
- SingleAnimationBase.cs
- HtmlSelect.cs
- QilReference.cs
- TrustManagerPromptUI.cs
- SoapMessage.cs
- DefaultMemberAttribute.cs
- ResolveMatches11.cs
- NumberFunctions.cs
- PackageStore.cs
- Sentence.cs
- ListControlConvertEventArgs.cs
- ResourceManagerWrapper.cs
- HandlerBase.cs
- DataControlFieldHeaderCell.cs
- newinstructionaction.cs
- WindowsSecurityToken.cs
- ClientRoleProvider.cs
- keycontainerpermission.cs
- DataPagerCommandEventArgs.cs
- SaveFileDialog.cs
- DecimalAnimationBase.cs
- SerialPinChanges.cs
- DisplayMemberTemplateSelector.cs
- XmlParserContext.cs
- UnsafeNativeMethodsTablet.cs
- QueryAccessibilityHelpEvent.cs
- ObjectParameterCollection.cs
- PaperSize.cs
- _ContextAwareResult.cs
- CodeTypeReferenceExpression.cs
- ExpressionSelection.cs
- BlobPersonalizationState.cs
- TypefaceMetricsCache.cs
- HtmlInputImage.cs
- CodeAttributeDeclaration.cs
- DirectoryRedirect.cs
- BookmarkEventArgs.cs
- DataContractSerializerFaultFormatter.cs
- SAPIEngineTypes.cs
- Vector3D.cs
- RC2CryptoServiceProvider.cs
- FlatButtonAppearance.cs
- IIS7UserPrincipal.cs
- ParameterCollection.cs
- SchemaCompiler.cs
- HwndSource.cs
- GetMemberBinder.cs
- SystemColorTracker.cs
- EntityDataSourceConfigureObjectContext.cs
- Semaphore.cs
- mda.cs
- BindableTemplateBuilder.cs
- SqlProvider.cs
- WasHttpModulesInstallComponent.cs
- ImpersonateTokenRef.cs
- DesignTimeSiteMapProvider.cs
- precedingquery.cs
- ServiceProviders.cs
- Bind.cs
- CriticalHandle.cs
- CompressionTracing.cs
- HttpCookie.cs
- IsolatedStoragePermission.cs
- APCustomTypeDescriptor.cs
- Button.cs
- StorageSetMapping.cs
- dataprotectionpermission.cs
- StreamResourceInfo.cs
- XomlSerializationHelpers.cs
- MethodRental.cs
- BindingContext.cs
- PageAsyncTaskManager.cs
- RuleInfoComparer.cs
- XmlILAnnotation.cs
- DataGridAutoFormatDialog.cs
- SqlRowUpdatedEvent.cs
- KeyManager.cs
- QilInvoke.cs
- CachingHintValidation.cs
- DataGridBoundColumn.cs