Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / xsp / System / Web / UI / HtmlControls / HtmlAnchor.cs / 1 / HtmlAnchor.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- /* * HtmlAnchor.cs * * Copyright (c) 2000 Microsoft Corporation */ namespace System.Web.UI.HtmlControls { using System.ComponentModel; using System; using System.Collections; using System.Web; using System.Web.UI; using System.Web.Util; using System.Security.Permissions; ////// [ DefaultEvent("ServerClick"), SupportsEventValidation, ] [AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)] [AspNetHostingPermission(SecurityAction.InheritanceDemand, Level=AspNetHostingPermissionLevel.Minimal)] public class HtmlAnchor : HtmlContainerControl, IPostBackEventHandler { private static readonly object EventServerClick = new object(); /* * Creates an intrinsic Html A control. */ ///The ////// class defines the methods, properties, and /// events for the HtmlAnchor control. /// This /// class /// allows programmatic access to the /// HTML <a> element on the server. /// public HtmlAnchor() : base("a") { } [ WebCategory("Behavior"), DefaultValue(true), ] public virtual bool CausesValidation { get { object b = ViewState["CausesValidation"]; return((b == null) ? true : (bool)b); } set { ViewState["CausesValidation"] = value; } } /* * Href property. */ ///Initializes a new instance of the ///class. /// [ WebCategory("Navigation"), DefaultValue(""), DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden), UrlProperty() ] public string HRef { get { string s = Attributes["href"]; return((s != null) ? s : String.Empty); } set { Attributes["href"] = MapStringAttributeToString(value); } } /* * Name of group this radio is in. */ ///Gets or sets the URL target of the link specified in the /// ////// server control. /// [ WebCategory("Navigation"), DefaultValue(""), DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden) ] public string Name { get { string s = Attributes["name"]; return((s != null) ? s : String.Empty); } set { Attributes["name"] = MapStringAttributeToString(value); } } /* * Target window property. */ ///Gets or sets the bookmark name defined in the ////// server /// control. /// [ WebCategory("Navigation"), DefaultValue(""), DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden) ] public string Target { get { string s = Attributes["target"]; return((s != null) ? s : String.Empty); } set { Attributes["target"] = MapStringAttributeToString(value); } } /* * Title property. */ ////// Gets or /// sets the target window or frame /// to load linked Web page content into. /// ////// [ WebCategory("Appearance"), Localizable(true), DefaultValue(""), DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden) ] public string Title { get { string s = Attributes["title"]; return((s != null) ? s : String.Empty); } set { Attributes["title"] = MapStringAttributeToString(value); } } [ WebCategory("Behavior"), DefaultValue(""), WebSysDescription(SR.PostBackControl_ValidationGroup) ] public virtual string ValidationGroup { get { string s = (string)ViewState["ValidationGroup"]; return((s == null) ? string.Empty : s); } set { ViewState["ValidationGroup"] = value; } } ///Gets or sets the title that /// the browser displays when identifying linked content. ////// [ WebCategory("Action"), WebSysDescription(SR.HtmlControl_OnServerClick) ] public event EventHandler ServerClick { add { Events.AddHandler(EventServerClick, value); } remove { Events.RemoveHandler(EventServerClick, value); } } private PostBackOptions GetPostBackOptions() { PostBackOptions options = new PostBackOptions(this, string.Empty); options.RequiresJavaScriptProtocol = true; if (CausesValidation && Page.GetValidators(ValidationGroup).Count > 0) { options.PerformValidation = true; options.ValidationGroup = ValidationGroup; } return options; } ///Occurs on the server when a user clicks the ///control on the /// browser. protected internal override void OnPreRender(EventArgs e) { base.OnPreRender(e); if (Page != null && Events[EventServerClick] != null) { Page.RegisterPostBackScript(); // VSWhidbey 489577 if (CausesValidation && Page.GetValidators(ValidationGroup).Count > 0) { Page.RegisterWebFormsScript(); } } } /* * Override to generate postback code for onclick. */ /// /// /// protected override void RenderAttributes(HtmlTextWriter writer) { if (Events[EventServerClick] != null) { Attributes.Remove("href"); base.RenderAttributes(writer); PostBackOptions options = GetPostBackOptions(); Debug.Assert(options != null); string postBackEventReference = Page.ClientScript.GetPostBackEventReference(options, true); Debug.Assert(!string.IsNullOrEmpty(postBackEventReference)); writer.WriteAttribute("href", postBackEventReference, true); } else { PreProcessRelativeReferenceAttribute(writer, "href"); base.RenderAttributes(writer); } } /* * Method used to raise the OnServerClick event. */ ////// protected virtual void OnServerClick(EventArgs e) { EventHandler handler = (EventHandler)Events[EventServerClick]; if (handler != null) handler(this, e); } /* * Method of IPostBackEventHandler interface to raise events on post back. * Button fires an OnServerClick event. */ ///Raises the ////// event. /// /// void IPostBackEventHandler.RaisePostBackEvent(string eventArgument) { RaisePostBackEvent(eventArgument); } ////// /// protected virtual void RaisePostBackEvent(string eventArgument) { ValidateEvent(UniqueID, eventArgument); if (CausesValidation) { Page.Validate(ValidationGroup); } OnServerClick(EventArgs.Empty); } } }
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- ApplicationProxyInternal.cs
- CustomTypeDescriptor.cs
- SamlAuthorizationDecisionStatement.cs
- Fault.cs
- RewritingPass.cs
- BitmapImage.cs
- HandleRef.cs
- ButtonBase.cs
- TemplateInstanceAttribute.cs
- LogWriteRestartAreaAsyncResult.cs
- COM2EnumConverter.cs
- XamlPointCollectionSerializer.cs
- BuildProviderUtils.cs
- IgnoreFlushAndCloseStream.cs
- DeviceSpecificChoice.cs
- IItemContainerGenerator.cs
- FacetDescriptionElement.cs
- UniqueTransportManagerRegistration.cs
- FontInfo.cs
- DoubleLinkListEnumerator.cs
- Page.cs
- FontSourceCollection.cs
- FieldReference.cs
- SByteStorage.cs
- RequestSecurityTokenSerializer.cs
- clipboard.cs
- PointConverter.cs
- ChildDocumentBlock.cs
- ConstrainedDataObject.cs
- MergeFailedEvent.cs
- TransformerConfigurationWizardBase.cs
- FamilyTypefaceCollection.cs
- SafeFindHandle.cs
- AsyncPostBackTrigger.cs
- DayRenderEvent.cs
- _FtpControlStream.cs
- DefaultMemberAttribute.cs
- Listen.cs
- ExceptQueryOperator.cs
- Membership.cs
- ThrowHelper.cs
- Exceptions.cs
- Bezier.cs
- HtmlShim.cs
- SqlDataSourceFilteringEventArgs.cs
- SqlNodeAnnotations.cs
- TimeoutException.cs
- NumericExpr.cs
- Wizard.cs
- PreviewPageInfo.cs
- CodeArrayIndexerExpression.cs
- AssociationSetEnd.cs
- ImageField.cs
- CompareInfo.cs
- FocusChangedEventArgs.cs
- NavigatorOutput.cs
- MembershipUser.cs
- MergeFailedEvent.cs
- TypeInformation.cs
- ExpandSegmentCollection.cs
- XmlSchemaAttribute.cs
- MarkupWriter.cs
- Queue.cs
- IntSecurity.cs
- SQLInt64.cs
- ThreadPool.cs
- NodeFunctions.cs
- TextBox.cs
- TextMarkerSource.cs
- TrustSection.cs
- PackagePartCollection.cs
- HttpContext.cs
- StringReader.cs
- Activity.cs
- XmlSchemaObject.cs
- XNodeNavigator.cs
- ObjectNotFoundException.cs
- MultipartIdentifier.cs
- SqlDependencyUtils.cs
- OleStrCAMarshaler.cs
- IgnorePropertiesAttribute.cs
- TraceUtils.cs
- SequentialWorkflowRootDesigner.cs
- ConfigXmlComment.cs
- SymbolEqualComparer.cs
- SessionParameter.cs
- DataSysAttribute.cs
- ByteStream.cs
- SystemIPInterfaceStatistics.cs
- DependencyPropertyHelper.cs
- KnownTypesHelper.cs
- AbstractSvcMapFileLoader.cs
- LineBreakRecord.cs
- RadioButtonPopupAdapter.cs
- Control.cs
- path.cs
- ShortcutKeysEditor.cs
- FlowLayout.cs
- TypeBuilderInstantiation.cs
- ProfessionalColors.cs