Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Core / CSharp / System / Windows / Media / ColorConverter.cs / 1305600 / ColorConverter.cs
//------------------------------------------------------------------------------ // Microsoft Avalon // Copyright (c) Microsoft Corporation, 2001, 2002 // // File: ColorConverter.cs //----------------------------------------------------------------------------- using System; using System.IO; using System.ComponentModel; using System.ComponentModel.Design.Serialization; using System.Reflection; using MS.Internal; using System.Windows.Media; using System.Text; using System.Collections; using System.Globalization; using System.Runtime.InteropServices; using System.Security; using SR=MS.Internal.PresentationCore.SR; using SRID=MS.Internal.PresentationCore.SRID; namespace System.Windows.Media { ////// ColorConverter Parses a color. /// public sealed class ColorConverter : TypeConverter { ////// CanConvertFrom /// public override bool CanConvertFrom(ITypeDescriptorContext td, Type t) { if (t == typeof(string)) { return true; } else { return false; } } ////// TypeConverter method override. /// /// ITypeDescriptorContext /// Type to convert to ///true if conversion is possible public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType) { if (destinationType == typeof(InstanceDescriptor)) { return true; } return base.CanConvertTo(context, destinationType); } ////// ConvertFromString /// public static new object ConvertFromString(string value) { if ( null == value) { return null; } return Parsers.ParseColor(value, null); } ////// ConvertFrom - attempt to convert to a Color from the given object /// ////// A NotSupportedException is thrown if the example object is null or is not a valid type /// which can be converted to a Color. /// public override object ConvertFrom(ITypeDescriptorContext td, System.Globalization.CultureInfo ci, object value) { if (null == value) { throw GetConvertFromException(value); } String s = value as string; if (null == s) { throw new ArgumentException(SR.Get(SRID.General_BadType, "ConvertFrom"), "value"); } return Parsers.ParseColor(value as string, ci, td); } ////// TypeConverter method implementation. /// ////// An NotSupportedException is thrown if the example object is null or is not a Color, /// or if the destinationType isn't one of the valid destination types. /// /// ITypeDescriptorContext /// current culture (see CLR specs) /// value to convert from /// Type to convert to ///converted value ////// Critical: calls InstanceDescriptor ctor which LinkDemands /// PublicOK: can only make an InstanceDescriptor for Color.FromArgb, not an arbitrary class/method /// [SecurityCritical] public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType) { if (destinationType != null && value is Color) { if (destinationType == typeof(InstanceDescriptor)) { MethodInfo mi = typeof(Color).GetMethod("FromArgb", new Type[]{typeof(byte), typeof(byte), typeof(byte), typeof(byte)}); Color c = (Color)value; return new InstanceDescriptor(mi, new object[]{c.A, c.R, c.G, c.B}); } else if (destinationType == typeof(string)) { Color c = (Color)value; return c.ToString(culture); } } // Pass unhandled cases to base class (which will throw exceptions for null value or destinationType.) 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
- TypedReference.cs
- FactoryGenerator.cs
- KeySpline.cs
- StaticDataManager.cs
- BitmapEffectGroup.cs
- ServiceModelActivationSectionGroup.cs
- SiteMap.cs
- ThreadExceptionEvent.cs
- EncoderFallback.cs
- PeerNodeTraceRecord.cs
- MessageQueueException.cs
- IERequestCache.cs
- DbQueryCommandTree.cs
- QilInvokeEarlyBound.cs
- StorageAssociationTypeMapping.cs
- Rotation3DKeyFrameCollection.cs
- EntityContainerAssociationSet.cs
- DeobfuscatingStream.cs
- TextAutomationPeer.cs
- ListDataHelper.cs
- WMICapabilities.cs
- DataServiceQueryOfT.cs
- EntityDataSourceContextCreatedEventArgs.cs
- _TLSstream.cs
- WebPartAddingEventArgs.cs
- WebControl.cs
- HtmlTextArea.cs
- PlatformCulture.cs
- EditorPartCollection.cs
- ToolStripMenuItem.cs
- ClientSponsor.cs
- TerminateSequence.cs
- ValueQuery.cs
- IdentityReference.cs
- HttpProcessUtility.cs
- WizardPanelChangingEventArgs.cs
- CompositeDuplexElement.cs
- ProfilePropertyMetadata.cs
- RenamedEventArgs.cs
- SslStream.cs
- HashSetEqualityComparer.cs
- Permission.cs
- CalendarTable.cs
- AdCreatedEventArgs.cs
- VectorAnimationBase.cs
- UInt16.cs
- DatatypeImplementation.cs
- StreamGeometry.cs
- Guid.cs
- PartitionedDataSource.cs
- HttpProfileGroupBase.cs
- DragCompletedEventArgs.cs
- InputBinding.cs
- ArrayList.cs
- FactoryGenerator.cs
- CapabilitiesSection.cs
- RuntimeConfigLKG.cs
- XhtmlConformanceSection.cs
- AttributeAction.cs
- UnknownBitmapDecoder.cs
- DataView.cs
- ScriptControlDescriptor.cs
- EventMetadata.cs
- PageBreakRecord.cs
- WebPartTransformerCollection.cs
- BindingEntityInfo.cs
- TextContainerHelper.cs
- CriticalExceptions.cs
- COM2ICategorizePropertiesHandler.cs
- ColorKeyFrameCollection.cs
- DetailsViewUpdateEventArgs.cs
- _ListenerAsyncResult.cs
- SchemaImporter.cs
- SQLBinaryStorage.cs
- ServiceContractAttribute.cs
- SqlUtils.cs
- ResourceReferenceExpression.cs
- ToolStripDropDownMenu.cs
- SecurityElement.cs
- SerializationStore.cs
- CodeBlockBuilder.cs
- ConcatQueryOperator.cs
- PointKeyFrameCollection.cs
- ClosableStream.cs
- Dispatcher.cs
- EventSetterHandlerConverter.cs
- TypeDependencyAttribute.cs
- EventHandlers.cs
- DataSourceView.cs
- XsdBuildProvider.cs
- Process.cs
- WorkflowRuntimeServicesBehavior.cs
- FamilyMap.cs
- XmlAttributeCache.cs
- PageAsyncTask.cs
- SqlProfileProvider.cs
- DragCompletedEventArgs.cs
- CustomBindingCollectionElement.cs
- DayRenderEvent.cs
- ValueConversionAttribute.cs