Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / xsp / System / Web / HttpCacheParams.cs / 2 / HttpCacheParams.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- /* * Cache Vary class. Wraps Vary header * * Copyright (c) 1998 Microsoft Corporation */ namespace System.Web { using System.Text; using System.Runtime.InteropServices; using System.Web.Util; using System.Security.Permissions; ////// [AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)] public sealed class HttpCacheVaryByParams { HttpDictionary _parameters; int _ignoreParams; bool _isModified; bool _paramsStar; internal HttpCacheVaryByParams() { Reset(); } internal void Reset() { _isModified = false; _paramsStar = false; _parameters = null; _ignoreParams = -1; } /* * Reset based on the cached vary headers. */ internal void ResetFromParams(String[] parameters) { int i, n; Reset(); if (parameters != null) { _isModified = true; if (parameters[0].Length == 0) { Debug.Assert(parameters.Length == 1, "parameters.Length == 1"); IgnoreParams = true; } else if (parameters[0].Equals("*")) { Debug.Assert(parameters.Length == 1, "parameters.Length == 1"); _paramsStar = true; } else { _parameters = new HttpDictionary(); for (i = 0, n = parameters.Length; i < n; i++) { _parameters.SetValue(parameters[i], parameters[i]); } } } } internal bool IsModified() { return _isModified; } internal bool AcceptsParams() { return _ignoreParams == 1 || _paramsStar || _parameters != null; } internal String[] GetParams() { String[] s = null; Object item; int i, j, c, n; if (_ignoreParams == 1) { s = new String[1] {String.Empty}; } else if (_paramsStar) { s = new String[1] {"*"}; } else if (_parameters != null) { n = _parameters.Size; c = 0; for (i = 0; i < n; i++) { item = _parameters.GetValue(i); if (item != null) { c++; } } if (c > 0) { s = new string[c]; j = 0; for (i = 0; i < n; i++) { item = _parameters.GetValue(i); if (item != null) { s[j] = (String) item; j++; } } Debug.Assert(j == c, "j == c"); } } return s; } // // Public methods and properties // ///Indicates that a cache should contain multiple /// representations for a particular Uri. This class is an encapsulation that /// provides a rich, type-safe way to set the Vary header. ////// public bool this[String header] { get { if (header == null) { throw new ArgumentNullException("header"); } if (header.Length == 0) { return _ignoreParams == 1; } else { return _paramsStar || (_parameters != null && _parameters.GetValue(header) != null); } } set { if (header == null) { throw new ArgumentNullException("header"); } if (header.Length == 0) { IgnoreParams = value; } /* * Since adding a Vary parameter is more restrictive, we don't * want components to be able to set a Vary parameter to false * if another component has set it to true. */ else if (value) { _isModified = true; _ignoreParams = 0; if (header.Equals("*")) { _paramsStar = true; _parameters = null; } else { // set value to header if true or null if false if (!_paramsStar) { if (_parameters == null) { _parameters = new HttpDictionary(); } _parameters.SetValue(header, header); } } } } } public bool IgnoreParams { get { return _ignoreParams == 1; } set { // Don't ignore if params have been added if (_paramsStar || _parameters != null) { return; } if (_ignoreParams == -1 || _ignoreParams == 1) { _ignoreParams = value ? 1 : 0; _isModified = true; } } } internal bool IsVaryByStar { get { return _paramsStar; } } } }Default property. /// Indexed property indicating that a cache should (or should not) vary according /// to a custom header. ///
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- DesignerActionPanel.cs
- ArrayExtension.cs
- _RequestCacheProtocol.cs
- WasEndpointConfigContainer.cs
- RichTextBox.cs
- UpDownBase.cs
- ListViewUpdateEventArgs.cs
- ImmComposition.cs
- OrthographicCamera.cs
- DataTransferEventArgs.cs
- HttpVersion.cs
- ObjectIDGenerator.cs
- XmlIterators.cs
- SqlErrorCollection.cs
- DashStyles.cs
- TypeUnloadedException.cs
- AxHost.cs
- Parameter.cs
- InvokePatternIdentifiers.cs
- TargetException.cs
- AlignmentYValidation.cs
- KeyGesture.cs
- SimpleBitVector32.cs
- DotExpr.cs
- Panel.cs
- SQLBytesStorage.cs
- WebBrowserContainer.cs
- RtfControls.cs
- SessionIDManager.cs
- ActivityXamlServices.cs
- CertificateManager.cs
- AnnotationComponentManager.cs
- EventDriven.cs
- Rect.cs
- RelatedEnd.cs
- CheckBox.cs
- MinMaxParagraphWidth.cs
- BitmapEffectvisualstate.cs
- LateBoundBitmapDecoder.cs
- ColumnResult.cs
- PrivateFontCollection.cs
- SHA512.cs
- BindingSourceDesigner.cs
- SequentialOutput.cs
- ItemContainerPattern.cs
- ReachDocumentReferenceSerializerAsync.cs
- DataSourceXmlTextReader.cs
- MultipleViewPattern.cs
- CodeExporter.cs
- ApplicationContext.cs
- AutomationEvent.cs
- documentsequencetextcontainer.cs
- And.cs
- SubstitutionResponseElement.cs
- FontWeights.cs
- TextInfo.cs
- _HelperAsyncResults.cs
- ArgumentOutOfRangeException.cs
- CompositeActivityDesigner.cs
- RegexCompiler.cs
- CellCreator.cs
- Token.cs
- Page.cs
- DataDocumentXPathNavigator.cs
- _ListenerAsyncResult.cs
- ObjectStateEntry.cs
- TableItemStyle.cs
- XPathNodePointer.cs
- SchemaEntity.cs
- DrawingContextWalker.cs
- DataTableExtensions.cs
- PackageDigitalSignature.cs
- MessageSecurityProtocolFactory.cs
- NavigatorOutput.cs
- TemplateBuilder.cs
- EntityProviderFactory.cs
- StateItem.cs
- IChannel.cs
- LostFocusEventManager.cs
- EdgeProfileValidation.cs
- EditingCoordinator.cs
- BindingNavigator.cs
- indexingfiltermarshaler.cs
- SoapIgnoreAttribute.cs
- DmlSqlGenerator.cs
- TextUtf8RawTextWriter.cs
- SmiConnection.cs
- BooleanAnimationUsingKeyFrames.cs
- NativeObjectSecurity.cs
- CatalogPartChrome.cs
- Globals.cs
- FastEncoder.cs
- BuilderInfo.cs
- TableDetailsCollection.cs
- ChildrenQuery.cs
- SerializerWriterEventHandlers.cs
- x509utils.cs
- AbstractDataSvcMapFileLoader.cs
- DrawingVisualDrawingContext.cs
- PersonalizableTypeEntry.cs