Code:
/ FXUpdate3074 / FXUpdate3074 / 1.1 / untmp / whidbey / QFE / ndp / fx / src / xsp / System / Web / UI / DataSourceCacheDurationConverter.cs / 2 / DataSourceCacheDurationConverter.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Web.UI { using System; using System.Collections; using System.ComponentModel; using System.ComponentModel.Design.Serialization; using System.Globalization; using System.Reflection; using System.Security.Permissions; using System.Web.Util; ////// Converts a cache duration such as an integer or the text "Infinite" to a cache duration, where "Infinite" implies zero (0). /// [AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)] [AspNetHostingPermission(SecurityAction.InheritanceDemand, Level=AspNetHostingPermissionLevel.Minimal)] public class DataSourceCacheDurationConverter : Int32Converter { private StandardValuesCollection _values; public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType) { if (sourceType == typeof(string)) { return true; } else { return base.CanConvertFrom(context, sourceType); } } 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 0; } if (String.Equals(textValue, "infinite", StringComparison.OrdinalIgnoreCase)) { return 0; } } return base.ConvertFrom(context, culture, value); } public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType) { if (destinationType == typeof(string)) { return true; } else { return base.CanConvertTo(context, destinationType); } } public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType) { if ((value != null) && (destinationType == typeof(string)) && ((int)value == 0)) { return "Infinite"; } else { return base.ConvertTo(context, culture, value, destinationType); } } public override StandardValuesCollection GetStandardValues(ITypeDescriptorContext context) { if (_values == null) { object[] values = new object[] { 0 }; _values = new StandardValuesCollection(values); } return _values; } public override bool GetStandardValuesExclusive(ITypeDescriptorContext context) { return false; } public override bool GetStandardValuesSupported(ITypeDescriptorContext context) { return true; } } } // 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
- HwndHostAutomationPeer.cs
- SpeakProgressEventArgs.cs
- FormViewActionList.cs
- ProxyGenerationError.cs
- TemplatePropertyEntry.cs
- HostedImpersonationContext.cs
- UpDownEvent.cs
- UIAgentAsyncEndRequest.cs
- ExtensionFile.cs
- TwoPhaseCommit.cs
- PropertyEntry.cs
- WebPartHeaderCloseVerb.cs
- SafeLibraryHandle.cs
- LinkArea.cs
- WindowPatternIdentifiers.cs
- Parsers.cs
- ContractNamespaceAttribute.cs
- SqlVersion.cs
- RuntimeArgumentHandle.cs
- TreeIterator.cs
- SynchronizingStream.cs
- BrushValueSerializer.cs
- WorkflowNamespace.cs
- MemberMaps.cs
- DataRecordInternal.cs
- OleDbDataReader.cs
- RelationalExpressions.cs
- Dynamic.cs
- FileDialogPermission.cs
- ToolStripPanelSelectionBehavior.cs
- CodeDomExtensionMethods.cs
- ToolStripGripRenderEventArgs.cs
- EncoderParameters.cs
- TriState.cs
- ConfigurationValue.cs
- GeometryCollection.cs
- SHA512Managed.cs
- FigureParagraph.cs
- BitmapDecoder.cs
- SourceFilter.cs
- DisplayMemberTemplateSelector.cs
- TypeDescriptionProvider.cs
- GridView.cs
- HtmlInputHidden.cs
- PreloadedPackages.cs
- DataBindingList.cs
- HtmlInputPassword.cs
- ModifierKeysValueSerializer.cs
- InvariantComparer.cs
- DropShadowEffect.cs
- WebBrowserDocumentCompletedEventHandler.cs
- FormCollection.cs
- CompensableActivity.cs
- DataServiceStreamResponse.cs
- ResponseBodyWriter.cs
- ZipPackage.cs
- BaseAsyncResult.cs
- BaseDataListActionList.cs
- ElementHostAutomationPeer.cs
- TextTreeTextElementNode.cs
- SQLSingleStorage.cs
- KeyboardNavigation.cs
- TreeNodeStyleCollection.cs
- HwndStylusInputProvider.cs
- ADConnectionHelper.cs
- X509CertificateEndpointIdentity.cs
- EntityAdapter.cs
- WebServiceParameterData.cs
- TypeValidationEventArgs.cs
- AbandonedMutexException.cs
- COM2PictureConverter.cs
- RoleBoolean.cs
- WebControlParameterProxy.cs
- ApplicationBuildProvider.cs
- ReferenceConverter.cs
- SoapServerMethod.cs
- MatrixTransform.cs
- IdentityManager.cs
- LZCodec.cs
- IpcClientManager.cs
- EdmProperty.cs
- TextTreePropertyUndoUnit.cs
- RelationshipDetailsRow.cs
- RtfToXamlReader.cs
- WhitespaceRule.cs
- TableLayoutPanelResizeGlyph.cs
- DataFormats.cs
- Adorner.cs
- MapPathBasedVirtualPathProvider.cs
- SerializationObjectManager.cs
- CodeCompiler.cs
- LabelDesigner.cs
- PathGeometry.cs
- WebPartZoneCollection.cs
- Panel.cs
- InternalConfigEventArgs.cs
- SqlProviderManifest.cs
- ConfigurationSectionGroupCollection.cs
- TargetControlTypeCache.cs
- ToolStripSplitStackLayout.cs