Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / CompMod / System / ComponentModel / GuidConverter.cs / 1 / GuidConverter.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- /* */ namespace System.ComponentModel { using Microsoft.Win32; using System.ComponentModel.Design.Serialization; using System.Diagnostics; using System.Globalization; using System.Reflection; using System.Runtime.InteropServices; using System.Runtime.Remoting; using System.Runtime.Serialization.Formatters; using System.Security.Permissions; ////// [HostProtection(SharedState = true)] public class GuidConverter : TypeConverter { ///Provides a /// type converter to convert globally unique identifier objects to and from various /// other representations. ////// public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType) { if (sourceType == typeof(string)) { return true; } return base.CanConvertFrom(context, sourceType); } ///Gets a value indicating whether this /// converter can convert an object in the given source type to a globally unique identifier object /// using the context. ////// public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType) { if (destinationType == typeof(InstanceDescriptor)) { return true; } return base.CanConvertTo(context, destinationType); } ///Gets a value indicating whether this converter can /// convert an object to the given destination type using the context. ////// public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value) { if (value is string) { string text = ((string)value).Trim(); return new Guid(text); } return base.ConvertFrom(context, culture, value); } ///Converts /// the given object to a globally unique identifier object. ////// Converts the given object to another type. The most common types to convert /// are to and from a string object. The default implementation will make a call /// to ToString on the object if the object is valid and if the destination /// type is string. If this cannot convert to the desitnation type, this will /// throw a NotSupportedException. /// public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType) { if (destinationType == null) { throw new ArgumentNullException("destinationType"); } if (destinationType == typeof(InstanceDescriptor) && value is Guid) { ConstructorInfo ctor = typeof(Guid).GetConstructor(new Type[] {typeof(string)}); if (ctor != null) { return new InstanceDescriptor(ctor, new object[] {value.ToString()}); } } return base.ConvertTo(context, culture, value, destinationType); } } }
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- FromRequest.cs
- Journaling.cs
- ArraySegment.cs
- ExtendedProtectionPolicyTypeConverter.cs
- PrimaryKeyTypeConverter.cs
- WorkflowServiceAttributesTypeConverter.cs
- NumericUpDown.cs
- TableLayoutRowStyleCollection.cs
- Clock.cs
- ADMembershipProvider.cs
- exports.cs
- DataGridViewImageColumn.cs
- ZipIOFileItemStream.cs
- ComponentSerializationService.cs
- GridView.cs
- ILGenerator.cs
- ListViewTableRow.cs
- Group.cs
- Operators.cs
- EditorAttributeInfo.cs
- PageThemeCodeDomTreeGenerator.cs
- Parsers.cs
- WebPartEditorCancelVerb.cs
- HostingEnvironmentWrapper.cs
- WizardStepBase.cs
- LayoutManager.cs
- RelationshipConverter.cs
- SchemaElementDecl.cs
- DefaultDialogButtons.cs
- HMACSHA384.cs
- UniqueIdentifierService.cs
- FontNamesConverter.cs
- AppDomain.cs
- NoPersistScope.cs
- XmlRootAttribute.cs
- GetWinFXPath.cs
- EdmError.cs
- UndoUnit.cs
- RayHitTestParameters.cs
- SpecularMaterial.cs
- FrameSecurityDescriptor.cs
- XmlSchemaElement.cs
- Msec.cs
- ColumnMapCopier.cs
- MappingMetadataHelper.cs
- ContentPropertyAttribute.cs
- webeventbuffer.cs
- XmlTextReaderImplHelpers.cs
- XmlBaseWriter.cs
- BaseTemplateParser.cs
- TypeDescriptor.cs
- XmlTypeAttribute.cs
- WhereQueryOperator.cs
- PackageFilter.cs
- FacetValues.cs
- SemanticBasicElement.cs
- IFlowDocumentViewer.cs
- SqlReorderer.cs
- ModuleElement.cs
- DataGridViewComboBoxCell.cs
- __ComObject.cs
- WebPartEditVerb.cs
- TreeViewImageKeyConverter.cs
- UnorderedHashRepartitionStream.cs
- XamlInterfaces.cs
- TraceSwitch.cs
- CommandEventArgs.cs
- TextBoxRenderer.cs
- Peer.cs
- AssociationType.cs
- log.cs
- BamlLocalizerErrorNotifyEventArgs.cs
- OleDbConnection.cs
- Models.cs
- ReflectionUtil.cs
- StylusPointPropertyUnit.cs
- ScaleTransform.cs
- processwaithandle.cs
- TiffBitmapEncoder.cs
- FontFamily.cs
- ParameterCollection.cs
- Helpers.cs
- SQLInt16.cs
- SoapBinding.cs
- NativeCppClassAttribute.cs
- TemplatingOptionsDialog.cs
- StandardCommands.cs
- FormViewPageEventArgs.cs
- IsolatedStorageException.cs
- SqlUserDefinedAggregateAttribute.cs
- MatrixUtil.cs
- DataBoundControl.cs
- XamlPoint3DCollectionSerializer.cs
- SafePEFileHandle.cs
- IInstanceTable.cs
- DataServiceResponse.cs
- HwndHostAutomationPeer.cs
- UserControlBuildProvider.cs
- HttpResponseHeader.cs
- ChooseAction.cs