Code:
/ FXUpdate3074 / FXUpdate3074 / 1.1 / untmp / whidbey / QFE / 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; } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.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
- XmlQueryRuntime.cs
- Literal.cs
- XamlGridLengthSerializer.cs
- Win32Native.cs
- XmlQuerySequence.cs
- HeaderCollection.cs
- ComponentResourceKey.cs
- ZipArchive.cs
- ClassicBorderDecorator.cs
- ModelEditingScope.cs
- Polyline.cs
- Geometry.cs
- ToolStripProgressBar.cs
- ListChangedEventArgs.cs
- WebPartHeaderCloseVerb.cs
- Root.cs
- IndexerNameAttribute.cs
- AsymmetricKeyExchangeDeformatter.cs
- FatalException.cs
- RenamedEventArgs.cs
- DataKey.cs
- ThemeableAttribute.cs
- DataTablePropertyDescriptor.cs
- TransformPattern.cs
- EntityDataSourceEntitySetNameItem.cs
- CodeStatementCollection.cs
- Activator.cs
- BitmapEffectDrawing.cs
- ClientProtocol.cs
- WebScriptMetadataFormatter.cs
- TextFormatterHost.cs
- PersonalizationState.cs
- BitVector32.cs
- GridItem.cs
- BuildDependencySet.cs
- TemplateBuilder.cs
- StateDesigner.LayoutSelectionGlyph.cs
- ValueQuery.cs
- VarRefManager.cs
- BindingExpressionBase.cs
- _Rfc2616CacheValidators.cs
- HeaderPanel.cs
- SkinBuilder.cs
- DataTemplateKey.cs
- ToolStripProgressBar.cs
- InfoCardTrace.cs
- CodeAccessSecurityEngine.cs
- ThreadExceptionEvent.cs
- FileSystemWatcher.cs
- QilName.cs
- DocumentViewerConstants.cs
- translator.cs
- BoundPropertyEntry.cs
- MenuBindingsEditor.cs
- UriTemplateVariablePathSegment.cs
- FormsAuthenticationEventArgs.cs
- StreamWithDictionary.cs
- listitem.cs
- CodeNamespaceCollection.cs
- InternalBufferOverflowException.cs
- TemplateInstanceAttribute.cs
- OleDbCommand.cs
- WebBaseEventKeyComparer.cs
- TableItemStyle.cs
- InlineUIContainer.cs
- ProgressBarBrushConverter.cs
- ConstraintEnumerator.cs
- DataProtection.cs
- AliasedSlot.cs
- RankException.cs
- BidPrivateBase.cs
- EditorBrowsableAttribute.cs
- BinaryReader.cs
- ProxyWebPart.cs
- EncryptedData.cs
- ToolStripPanelRow.cs
- BitmapEffectGroup.cs
- ContextMenuStripGroupCollection.cs
- FixedHyperLink.cs
- RC2.cs
- SByteStorage.cs
- XslAstAnalyzer.cs
- FixedPageProcessor.cs
- LocalizedNameDescriptionPair.cs
- DesignerSelectionListAdapter.cs
- DocumentApplication.cs
- XmlSchemaIdentityConstraint.cs
- ContentElement.cs
- DataGridColumn.cs
- DataGridItem.cs
- ADMembershipUser.cs
- DownloadProgressEventArgs.cs
- HashCryptoHandle.cs
- GridViewColumnHeaderAutomationPeer.cs
- ErrorFormatter.cs
- dbenumerator.cs
- SemaphoreFullException.cs
- ObjectDataSourceSelectingEventArgs.cs
- DataGridViewComboBoxColumn.cs
- SrgsGrammar.cs