Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / CompMod / System / ComponentModel / BooleanConverter.cs / 1 / BooleanConverter.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- /* */ namespace System.ComponentModel { using Microsoft.Win32; using System.Collections; using System.ComponentModel; using System.Diagnostics; using System.Globalization; using System.Runtime.InteropServices; using System.Runtime.Remoting; using System.Runtime.Serialization.Formatters; using System.Security.Permissions; ////// [HostProtection(SharedState = true)] public class BooleanConverter : TypeConverter { private static StandardValuesCollection values; ///Provides a type converter to convert /// Boolean 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 Boolean object using the /// specified context. ////// public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value) { if (value is string) { string text = ((string)value).Trim(); try { return Boolean.Parse(text); } catch (FormatException e) { throw new FormatException(SR.GetString(SR.ConvertInvalidPrimitive, (string)value, "Boolean"), e); } } return base.ConvertFrom(context, culture, value); } ///Converts the given value /// object to a Boolean object. ////// public override StandardValuesCollection GetStandardValues(ITypeDescriptorContext context) { if (values == null) { values = new StandardValuesCollection(new object[] {true, false}); } return values; } ///Gets a collection of standard values /// for the Boolean data type. ////// public override bool GetStandardValuesExclusive(ITypeDescriptorContext context) { return true; } ///Gets a value indicating whether the list of standard values returned from /// ///is an exclusive list. /// public override bool GetStandardValuesSupported(ITypeDescriptorContext context) { return true; } } }Gets a value indicating whether this object supports a standard set of values /// that can be picked from a list. ///
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- EmptyStringExpandableObjectConverter.cs
- PtsHelper.cs
- tabpagecollectioneditor.cs
- WorkflowRuntimeElement.cs
- DesignOnlyAttribute.cs
- SharedConnectionWorkflowTransactionService.cs
- GradientStop.cs
- HopperCache.cs
- TypeDescriptor.cs
- RIPEMD160Managed.cs
- CachedTypeface.cs
- ConfigurationLockCollection.cs
- IMembershipProvider.cs
- CalculatedColumn.cs
- MenuBindingsEditorForm.cs
- CompensableActivity.cs
- FontResourceCache.cs
- Scalars.cs
- ObjectItemNoOpAssemblyLoader.cs
- NumericExpr.cs
- GatewayDefinition.cs
- WebHttpDispatchOperationSelectorData.cs
- WindowsStatic.cs
- WmpBitmapEncoder.cs
- ErrorHandler.cs
- ComponentCache.cs
- DesignerForm.cs
- TTSEvent.cs
- ViewBox.cs
- Char.cs
- TextBoxView.cs
- DataTableMapping.cs
- ImageMap.cs
- LinearKeyFrames.cs
- ProtocolViolationException.cs
- XhtmlCssHandler.cs
- RestClientProxyHandler.cs
- EditorServiceContext.cs
- DataGridViewRowsRemovedEventArgs.cs
- Encoding.cs
- XPathNodePointer.cs
- SafeNativeMethodsOther.cs
- InputScope.cs
- DateTimeFormatInfoScanner.cs
- PopupRoot.cs
- Italic.cs
- RSAPKCS1SignatureDeformatter.cs
- CultureInfo.cs
- Span.cs
- CodeMethodInvokeExpression.cs
- XmlBoundElement.cs
- SourceItem.cs
- DataListItemEventArgs.cs
- StdRegProviderWrapper.cs
- DbConnectionHelper.cs
- XmlAttributeAttribute.cs
- ConnectionPoolManager.cs
- PropertyTabChangedEvent.cs
- RadialGradientBrush.cs
- HtmlInputRadioButton.cs
- TableItemProviderWrapper.cs
- MessageDispatch.cs
- MediaElementAutomationPeer.cs
- ScriptBehaviorDescriptor.cs
- dsa.cs
- MethodImplAttribute.cs
- CodeAttributeDeclarationCollection.cs
- DataPointer.cs
- COM2TypeInfoProcessor.cs
- TextBoxRenderer.cs
- ActivationWorker.cs
- TcpAppDomainProtocolHandler.cs
- FileChangesMonitor.cs
- TemplateParser.cs
- SHA1Managed.cs
- Splitter.cs
- InstanceCollisionException.cs
- TextServicesCompartment.cs
- QuaternionAnimation.cs
- ConfigXmlAttribute.cs
- ConstructorArgumentAttribute.cs
- AnonymousIdentificationModule.cs
- SimplePropertyEntry.cs
- CrossContextChannel.cs
- SharedPerformanceCounter.cs
- ThumbAutomationPeer.cs
- BitmapEffect.cs
- Odbc32.cs
- objectresult_tresulttype.cs
- basemetadatamappingvisitor.cs
- SiteMapDataSourceView.cs
- NamedPipeChannelListener.cs
- NavigationPropertyEmitter.cs
- SchemaImporterExtension.cs
- SqlCommand.cs
- XmlnsDictionary.cs
- DefaultTextStoreTextComposition.cs
- ListViewGroupItemCollection.cs
- EmbeddedMailObjectsCollection.cs
- DataGridColumn.cs