Code:
/ FXUpdate3074 / FXUpdate3074 / 1.1 / untmp / whidbey / QFE / ndp / fx / src / xsp / System / Web / UI / HtmlControls / HtmlInputHidden.cs / 2 / HtmlInputHidden.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- /* * HtmlInputHidden.cs * * Copyright (c) 2000 Microsoft Corporation */ namespace System.Web.UI.HtmlControls { using System.ComponentModel; using System; using System.Collections; using System.Collections.Specialized; using System.Web; using System.Web.UI; using System.Security.Permissions; ////// [ DefaultEvent("ServerChange"), SupportsEventValidation, ] [AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)] [AspNetHostingPermission(SecurityAction.InheritanceDemand, Level=AspNetHostingPermissionLevel.Minimal)] public class HtmlInputHidden : HtmlInputControl, IPostBackDataHandler { private static readonly object EventServerChange = new object(); /* * Creates an intrinsic Html INPUT type=hidden control. */ public HtmlInputHidden() : base("hidden") { } ////// The ///class defines the methods, properties, /// and events of the HtmlInputHidden control. This class allows programmatic access /// to the HTML <input type=hidden> element on the server. /// /// [ WebCategory("Action"), WebSysDescription(SR.HtmlInputHidden_OnServerChange) ] public event EventHandler ServerChange { add { Events.AddHandler(EventServerChange, value); } remove { Events.RemoveHandler(EventServerChange, value); } } /* * Method used to raise the OnServerChange event. */ ////// Occurs when the ///control /// is changed on the server. /// /// protected virtual void OnServerChange(EventArgs e) { EventHandler handler = (EventHandler)Events[EventServerChange]; if (handler != null) handler(this, e); } /* * */ ////// Raised on the server when the ///control /// changes between postback requests. /// /// /// protected internal override void OnPreRender(EventArgs e) { base.OnPreRender(e); // if no change handler, no need to save posted property if (!Disabled) { if (Events[EventServerChange] == null) { ViewState.SetItemDirty("value",false); } if (Page != null) { Page.RegisterEnabledControl(this); } } } /* * Method of IPostBackDataHandler interface to process posted data. * InputText process a newly posted value. */ ////// /// bool IPostBackDataHandler.LoadPostData(string postDataKey, NameValueCollection postCollection) { return LoadPostData(postDataKey, postCollection); } protected virtual bool LoadPostData(string postDataKey, NameValueCollection postCollection) { string current = Value; string text = postCollection.GetValues(postDataKey)[0]; if (!current.Equals(text)) { ValidateEvent(postDataKey); Value = text; return true; } return false; } protected override void RenderAttributes(HtmlTextWriter writer) { base.RenderAttributes(writer); if (Page != null) { Page.ClientScript.RegisterForEventValidation(RenderedNameAttribute); } } /* * Method of IPostBackDataHandler interface which is invoked whenever posted data * for a control has changed. TextBox fires an OnTextChanged event. */ ////// /// void IPostBackDataHandler.RaisePostDataChangedEvent() { RaisePostDataChangedEvent(); } ////// /// protected virtual void RaisePostDataChangedEvent() { OnServerChange(EventArgs.Empty); } } } // 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
- Translator.cs
- DefaultBindingPropertyAttribute.cs
- ConstantProjectedSlot.cs
- TraceEventCache.cs
- PersonalizationProviderCollection.cs
- NameValuePair.cs
- ReflectionTypeLoadException.cs
- Internal.cs
- XmlNodeList.cs
- SelectionEditingBehavior.cs
- Listbox.cs
- HttpApplication.cs
- RotationValidation.cs
- MulticastDelegate.cs
- ColumnCollectionEditor.cs
- TextElementCollection.cs
- ListItemViewControl.cs
- UInt16Storage.cs
- glyphs.cs
- SafeEventLogWriteHandle.cs
- MetadataPropertyAttribute.cs
- HttpGetProtocolImporter.cs
- XMLUtil.cs
- ManagementObject.cs
- SqlSupersetValidator.cs
- UnsafeNativeMethods.cs
- ContextMenuService.cs
- PerformanceCounterManager.cs
- OptimalTextSource.cs
- ParentUndoUnit.cs
- StringUtil.cs
- BaseHashHelper.cs
- Soap12FormatExtensions.cs
- TCPClient.cs
- DockProviderWrapper.cs
- SecurityState.cs
- OpenFileDialog.cs
- HttpHeaderCollection.cs
- BaseTreeIterator.cs
- XsltFunctions.cs
- ParameterCollection.cs
- DataContractSerializerSection.cs
- Line.cs
- PeerName.cs
- ResourcePart.cs
- RequestBringIntoViewEventArgs.cs
- IntranetCredentialPolicy.cs
- Stylus.cs
- CommandLineParser.cs
- Int32AnimationBase.cs
- BinaryFormatterWriter.cs
- Localizer.cs
- Padding.cs
- BaseContextMenu.cs
- NetworkCredential.cs
- LifetimeServices.cs
- TreeBuilder.cs
- VSDExceptions.cs
- PeerEndPoint.cs
- MessageQueueCriteria.cs
- Interfaces.cs
- Utils.cs
- followingquery.cs
- DocumentViewer.cs
- RawStylusActions.cs
- QilBinary.cs
- PersonalizableAttribute.cs
- Byte.cs
- TypeConverterMarkupExtension.cs
- DCSafeHandle.cs
- addressfiltermode.cs
- StreamReader.cs
- dtdvalidator.cs
- DataSourceXmlSubItemAttribute.cs
- ProxyAttribute.cs
- Codec.cs
- NativeMethods.cs
- SByte.cs
- DataObjectMethodAttribute.cs
- DataListItem.cs
- Exceptions.cs
- MonikerSyntaxException.cs
- DaylightTime.cs
- MouseActionValueSerializer.cs
- WeakHashtable.cs
- RMPermissions.cs
- oledbmetadatacolumnnames.cs
- SqlProfileProvider.cs
- Pkcs7Signer.cs
- ConnectionStringsSection.cs
- DropShadowBitmapEffect.cs
- DataServiceExpressionVisitor.cs
- TablePatternIdentifiers.cs
- DataGridPageChangedEventArgs.cs
- MediaTimeline.cs
- KeyToListMap.cs
- ToolTip.cs
- PropertyGridEditorPart.cs
- UserPreferenceChangedEventArgs.cs
- LogWriteRestartAreaState.cs