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
- CommandExpr.cs
- DesignerForm.cs
- StringUtil.cs
- RowToParametersTransformer.cs
- SecurityState.cs
- Visual3D.cs
- HttpHeaderCollection.cs
- ScriptReferenceBase.cs
- _emptywebproxy.cs
- GlyphsSerializer.cs
- KeyPressEvent.cs
- _Win32.cs
- ListChangedEventArgs.cs
- ExtenderControl.cs
- CaseInsensitiveComparer.cs
- ConfigurationLocationCollection.cs
- FieldMetadata.cs
- Translator.cs
- ReadWriteSpinLock.cs
- EntityDataSourceContainerNameConverter.cs
- BaseCollection.cs
- XmlWrappingWriter.cs
- ScrollViewer.cs
- ExtensionQuery.cs
- ToggleProviderWrapper.cs
- SHA1CryptoServiceProvider.cs
- QueryInterceptorAttribute.cs
- HashCryptoHandle.cs
- ToolBar.cs
- DataGridViewImageCell.cs
- TypeConverters.cs
- RegexCaptureCollection.cs
- EventEntry.cs
- WindowAutomationPeer.cs
- ObjectResult.cs
- CodeEntryPointMethod.cs
- Rule.cs
- ResourcePermissionBase.cs
- PointHitTestResult.cs
- ComboBoxRenderer.cs
- RowParagraph.cs
- XmlRawWriter.cs
- CssClassPropertyAttribute.cs
- FlowPanelDesigner.cs
- FormViewCommandEventArgs.cs
- selecteditemcollection.cs
- ZipArchive.cs
- SelectionProcessor.cs
- GridItem.cs
- AdRotatorDesigner.cs
- Int32.cs
- TypedReference.cs
- HwndStylusInputProvider.cs
- GroupItemAutomationPeer.cs
- DataGridPagerStyle.cs
- MessageDescriptionCollection.cs
- SqlDependency.cs
- ReflectionUtil.cs
- HMACSHA1.cs
- WhitespaceRule.cs
- LicenseManager.cs
- JsonByteArrayDataContract.cs
- X509SecurityTokenAuthenticator.cs
- DetailsViewPageEventArgs.cs
- RowVisual.cs
- ProcessExitedException.cs
- DataGridBoolColumn.cs
- MiniParameterInfo.cs
- TraceUtility.cs
- ExecutionEngineException.cs
- SecuritySessionClientSettings.cs
- SecurityBindingElementImporter.cs
- SimpleParser.cs
- Trace.cs
- RootBrowserWindowAutomationPeer.cs
- PartManifestEntry.cs
- InitializationEventAttribute.cs
- ConfigurationConverterBase.cs
- RectangleF.cs
- DefaultObjectMappingItemCollection.cs
- ClientScriptItemCollection.cs
- MinimizableAttributeTypeConverter.cs
- RequestCacheValidator.cs
- XmlQueryType.cs
- ReferenceEqualityComparer.cs
- StringAnimationBase.cs
- NumericPagerField.cs
- XamlBrushSerializer.cs
- AttributeQuery.cs
- CRYPTPROTECT_PROMPTSTRUCT.cs
- DataGridViewRowPrePaintEventArgs.cs
- BitmapSourceSafeMILHandle.cs
- GridItemPattern.cs
- DecoderNLS.cs
- WebPartCancelEventArgs.cs
- MemberHolder.cs
- EntityAdapter.cs
- SqlDataSourceSelectingEventArgs.cs
- Int16.cs
- ADConnectionHelper.cs