Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / xsp / System / Web / UI / HtmlControls / HtmlInputRadioButton.cs / 1305376 / HtmlInputRadioButton.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- /* * HtmlInputRadioButton.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, ] public class HtmlInputRadioButton : HtmlInputControl, IPostBackDataHandler { private static readonly object EventServerChange = new object(); /* * Creates an intrinsic Html INPUT type=radio control. */ public HtmlInputRadioButton() : base("radio") { } /* * Checked property. */ ////// The ///class defines the methods, /// properties, and events for the HtmlInputRadio control. This class allows /// programmatic access to the HTML <input type= /// radio> /// element on the server. /// /// [ WebCategory("Default"), DefaultValue(""), DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden) ] public bool Checked { get { string s = Attributes["checked"]; return((s != null) ? (s.Equals("checked")) : false); } set { if (value) Attributes["checked"] = "checked"; else Attributes["checked"] = null; } } ////// Gets or sets a value indicating whether a radio button is /// currently selected or not. /// ////// public override string Name { get { string s = Attributes["name"]; return ((s != null) ? s : String.Empty); } set { Attributes["name"] = MapStringAttributeToString(value); } } ////// Gets the value of the HTML /// Name attribute that will be rendered to the browser. /// ////// public override string Value { get { string val = base.Value; if (val.Length != 0) return val; val = ID; if (val != null) return val; // if specific value is not provided, use the UniqueID return UniqueID; } set { base.Value = value; } } // Value that gets rendered for the Name attribute internal override string RenderedNameAttribute { get { // For radio buttons, we must make the name unique, but can't just use the // UniqueID because all buttons in a group must have the same name. So // we replace the last part of the UniqueID with the group Name. string name = base.RenderedNameAttribute; string uid = UniqueID; int lastColon = uid.LastIndexOf(IdSeparator); if (lastColon >= 0) name = uid.Substring(0, lastColon+1) + name; return name; } } [ WebCategory("Action"), WebSysDescription(SR.Control_OnServerCheckChanged) ] public event EventHandler ServerChange { add { Events.AddHandler(EventServerChange, value); } remove { Events.RemoveHandler(EventServerChange, value); } } /* * This method is invoked just prior to rendering. */ ////// Gets or sets the contents of a text box. /// ////// /// protected internal override void OnPreRender(EventArgs e) { base.OnPreRender(e); if (Page != null && !Disabled) { Page.RegisterRequiresPostBack(this); Page.RegisterEnabledControl(this); } // if no change handler, no need to save posted property if (Events[EventServerChange] == null && !Disabled) { ViewState.SetItemDirty("checked",false); } } /* * Method used to raise the OnServerChange event. */ ////// protected virtual void OnServerChange(EventArgs e) { EventHandler handler = (EventHandler)Events[EventServerChange]; if (handler != null) handler(this, e); } ////// /// protected override void RenderAttributes(HtmlTextWriter writer) { if (Page != null) { Page.ClientScript.RegisterForEventValidation(Value, RenderedNameAttribute); } writer.WriteAttribute("value", Value); Attributes.Remove("value"); base.RenderAttributes(writer); } /* * Method of IPostBackDataHandler interface to process posted data. * RadioButton determines the posted radio group state. */ ////// /// bool IPostBackDataHandler.LoadPostData(string postDataKey, NameValueCollection postCollection) { return LoadPostData(postDataKey, postCollection); } ////// /// protected virtual bool LoadPostData(string postDataKey, NameValueCollection postCollection) { string postValue = postCollection[RenderedNameAttribute]; bool valueChanged = false; if ((postValue != null) && postValue.Equals(Value)) { if (Checked == false) { ValidateEvent(Value, RenderedNameAttribute); Checked = true; // only fire change event for RadioButton that is being checked valueChanged = true; } } else { if (Checked == true) { Checked = false; } } return valueChanged; } /* * Method of IPostBackDataHandler interface which is invoked whenever posted data * for a control has changed. RadioButton fires an OnServerChange 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. // //----------------------------------------------------------------------------- /* * HtmlInputRadioButton.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, ] public class HtmlInputRadioButton : HtmlInputControl, IPostBackDataHandler { private static readonly object EventServerChange = new object(); /* * Creates an intrinsic Html INPUT type=radio control. */ public HtmlInputRadioButton() : base("radio") { } /* * Checked property. */ ////// The ///class defines the methods, /// properties, and events for the HtmlInputRadio control. This class allows /// programmatic access to the HTML <input type= /// radio> /// element on the server. /// /// [ WebCategory("Default"), DefaultValue(""), DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden) ] public bool Checked { get { string s = Attributes["checked"]; return((s != null) ? (s.Equals("checked")) : false); } set { if (value) Attributes["checked"] = "checked"; else Attributes["checked"] = null; } } ////// Gets or sets a value indicating whether a radio button is /// currently selected or not. /// ////// public override string Name { get { string s = Attributes["name"]; return ((s != null) ? s : String.Empty); } set { Attributes["name"] = MapStringAttributeToString(value); } } ////// Gets the value of the HTML /// Name attribute that will be rendered to the browser. /// ////// public override string Value { get { string val = base.Value; if (val.Length != 0) return val; val = ID; if (val != null) return val; // if specific value is not provided, use the UniqueID return UniqueID; } set { base.Value = value; } } // Value that gets rendered for the Name attribute internal override string RenderedNameAttribute { get { // For radio buttons, we must make the name unique, but can't just use the // UniqueID because all buttons in a group must have the same name. So // we replace the last part of the UniqueID with the group Name. string name = base.RenderedNameAttribute; string uid = UniqueID; int lastColon = uid.LastIndexOf(IdSeparator); if (lastColon >= 0) name = uid.Substring(0, lastColon+1) + name; return name; } } [ WebCategory("Action"), WebSysDescription(SR.Control_OnServerCheckChanged) ] public event EventHandler ServerChange { add { Events.AddHandler(EventServerChange, value); } remove { Events.RemoveHandler(EventServerChange, value); } } /* * This method is invoked just prior to rendering. */ ////// Gets or sets the contents of a text box. /// ////// /// protected internal override void OnPreRender(EventArgs e) { base.OnPreRender(e); if (Page != null && !Disabled) { Page.RegisterRequiresPostBack(this); Page.RegisterEnabledControl(this); } // if no change handler, no need to save posted property if (Events[EventServerChange] == null && !Disabled) { ViewState.SetItemDirty("checked",false); } } /* * Method used to raise the OnServerChange event. */ ////// protected virtual void OnServerChange(EventArgs e) { EventHandler handler = (EventHandler)Events[EventServerChange]; if (handler != null) handler(this, e); } ////// /// protected override void RenderAttributes(HtmlTextWriter writer) { if (Page != null) { Page.ClientScript.RegisterForEventValidation(Value, RenderedNameAttribute); } writer.WriteAttribute("value", Value); Attributes.Remove("value"); base.RenderAttributes(writer); } /* * Method of IPostBackDataHandler interface to process posted data. * RadioButton determines the posted radio group state. */ ////// /// bool IPostBackDataHandler.LoadPostData(string postDataKey, NameValueCollection postCollection) { return LoadPostData(postDataKey, postCollection); } ////// /// protected virtual bool LoadPostData(string postDataKey, NameValueCollection postCollection) { string postValue = postCollection[RenderedNameAttribute]; bool valueChanged = false; if ((postValue != null) && postValue.Equals(Value)) { if (Checked == false) { ValidateEvent(Value, RenderedNameAttribute); Checked = true; // only fire change event for RadioButton that is being checked valueChanged = true; } } else { if (Checked == true) { Checked = false; } } return valueChanged; } /* * Method of IPostBackDataHandler interface which is invoked whenever posted data * for a control has changed. RadioButton fires an OnServerChange event. */ ////// /// void IPostBackDataHandler.RaisePostDataChangedEvent() { RaisePostDataChangedEvent(); } ////// /// protected virtual void RaisePostDataChangedEvent() { OnServerChange(EventArgs.Empty); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
Link Menu

This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- ValidatingPropertiesEventArgs.cs
- XmlCodeExporter.cs
- GlyphCache.cs
- LogReservationCollection.cs
- MD5.cs
- SerialStream.cs
- AutoResetEvent.cs
- InfoCardRSAPKCS1SignatureFormatter.cs
- WebEventCodes.cs
- XmlBinaryReader.cs
- ToolStripContentPanelRenderEventArgs.cs
- Drawing.cs
- PerformanceCounterCategory.cs
- HashCryptoHandle.cs
- ReferentialConstraint.cs
- RegisteredScript.cs
- PropertyGridCommands.cs
- AsymmetricAlgorithm.cs
- SemaphoreSecurity.cs
- ModelChangedEventArgsImpl.cs
- EntityDataSourceSelectedEventArgs.cs
- DocumentSchemaValidator.cs
- ResourceAttributes.cs
- SafeNativeMethods.cs
- ConnectionsZone.cs
- HttpHandlerAction.cs
- TimeSpanMinutesOrInfiniteConverter.cs
- FunctionGenerator.cs
- RelationshipWrapper.cs
- DataSourceProvider.cs
- DiscardableAttribute.cs
- KeyTime.cs
- OleDbParameter.cs
- ListViewGroupItemCollection.cs
- ContextBase.cs
- SolidBrush.cs
- TreeWalkHelper.cs
- ScrollProperties.cs
- Vector3DCollectionConverter.cs
- TextBreakpoint.cs
- RegexBoyerMoore.cs
- ListViewDesigner.cs
- HashAlgorithm.cs
- DefaultObjectMappingItemCollection.cs
- TypeContext.cs
- TraceSwitch.cs
- KnownTypes.cs
- XmlSchemas.cs
- MessageContractImporter.cs
- HijriCalendar.cs
- MonthChangedEventArgs.cs
- RoutedEventArgs.cs
- LazyTextWriterCreator.cs
- AccessViolationException.cs
- SystemInformation.cs
- NavigationHelper.cs
- Mapping.cs
- HeaderedItemsControl.cs
- TreeBuilder.cs
- StylusSystemGestureEventArgs.cs
- MtomMessageEncoder.cs
- AnimationStorage.cs
- Rijndael.cs
- SegmentInfo.cs
- LocatorBase.cs
- FullTrustAssemblyCollection.cs
- ClientConfigurationSystem.cs
- SystemBrushes.cs
- ActiveXHost.cs
- DBCSCodePageEncoding.cs
- ImportRequest.cs
- AutoGeneratedField.cs
- IUnknownConstantAttribute.cs
- EntityDataSourceWizardForm.cs
- QilScopedVisitor.cs
- StylusShape.cs
- CheckBoxField.cs
- CodeBinaryOperatorExpression.cs
- HostSecurityManager.cs
- ListBoxChrome.cs
- FrameworkContentElementAutomationPeer.cs
- base64Transforms.cs
- GCHandleCookieTable.cs
- ClientCultureInfo.cs
- XmlBindingWorker.cs
- HttpCapabilitiesBase.cs
- MSAANativeProvider.cs
- DropSource.cs
- EventLogEntry.cs
- WsdlBuildProvider.cs
- RegexCode.cs
- WindowsListViewItem.cs
- StringArrayEditor.cs
- ConstrainedDataObject.cs
- DispatcherObject.cs
- BaseParaClient.cs
- Vector3DAnimation.cs
- MailSettingsSection.cs
- BitmapFrame.cs
- DataViewSettingCollection.cs