Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / xsp / System / Web / UI / WebControls / DropDownList.cs / 1305376 / DropDownList.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Web.UI.WebControls { using System; using System.Collections; using System.ComponentModel; using System.Collections.Specialized; using System.Drawing; using System.Web; using System.Web.UI; using System.Web.UI.WebControls.Adapters; ////// [ SupportsEventValidation, ValidationProperty("SelectedItem") ] public class DropDownList : ListControl, IPostBackDataHandler { ///Creates a control that allows the user to select a single item from a /// drop-down list. ////// public DropDownList() { } ///Initializes a new instance of the ///class. /// [ Browsable(false) ] public override Color BorderColor { get { return base.BorderColor; } set { base.BorderColor = value; } } ///[To be supplied.] ////// [ Browsable(false) ] public override BorderStyle BorderStyle { get { return base.BorderStyle; } set { base.BorderStyle = value; } } ///[To be supplied.] ////// [ Browsable(false) ] public override Unit BorderWidth { get { return base.BorderWidth; } set { base.BorderWidth = value; } } public override bool SupportsDisabledAttribute { get { return true; } } ///[To be supplied.] ////// [ WebCategory("Behavior"), DefaultValue(0), WebSysDescription(SR.WebControl_SelectedIndex), DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden) ] public override int SelectedIndex { get { int selectedIndex = base.SelectedIndex; if (selectedIndex < 0 && Items.Count > 0) { Items[0].Selected = true; selectedIndex = 0; } return selectedIndex; } set { base.SelectedIndex = value; } } internal override ArrayList SelectedIndicesInternal { get { int sideEffect = SelectedIndex; return base.SelectedIndicesInternal; } } protected override void AddAttributesToRender(HtmlTextWriter writer) { string uniqueID = UniqueID; if (uniqueID != null) { writer.AddAttribute(HtmlTextWriterAttribute.Name, uniqueID); } base.AddAttributesToRender(writer); } protected override ControlCollection CreateControlCollection() { return new EmptyControlCollection(this); } ///Gets or sets the index of the item selected by the user /// from the ////// control. /// /// bool IPostBackDataHandler.LoadPostData(String postDataKey, NameValueCollection postCollection) { return LoadPostData(postDataKey, postCollection); } ///Process posted data for the ///control. /// /// protected virtual bool LoadPostData(String postDataKey, NameValueCollection postCollection) { // When a DropDownList is disabled, then there is no postback data for it. // Since DropDownList doesn't call RegisterRequiresPostBack, this method will // never be called, so we don't need to worry about ignoring empty postback data. string [] selectedItems = postCollection.GetValues(postDataKey); EnsureDataBound(); if (selectedItems != null) { ValidateEvent(postDataKey, selectedItems[0]); int n = Items.FindByValueInternal(selectedItems[0], false); if (SelectedIndex != n) { SetPostDataSelection(n); return true; } } return false; } ///Process posted data for the ///control. /// /// void IPostBackDataHandler.RaisePostDataChangedEvent() { RaisePostDataChangedEvent(); } ///Raises events for the ///control on post back. /// /// protected virtual void RaisePostDataChangedEvent() { if (AutoPostBack && !Page.IsPostBackEventControlRegistered) { // VSWhidbey 204824 Page.AutoPostBackControl = this; if (CausesValidation) { Page.Validate(ValidationGroup); } } OnSelectedIndexChanged(EventArgs.Empty); } protected internal override void VerifyMultiSelect() { throw new HttpException(SR.GetString(SR.Cant_Multiselect, "DropDownList")); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.Raises events for the ///control on post back.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- ConfigXmlWhitespace.cs
- SerializationEventsCache.cs
- objectresult_tresulttype.cs
- InvariantComparer.cs
- InternalConfigEventArgs.cs
- LocatorManager.cs
- CallContext.cs
- tibetanshape.cs
- ClientBuildManagerCallback.cs
- OdbcRowUpdatingEvent.cs
- QilXmlReader.cs
- DataTrigger.cs
- QuadraticBezierSegment.cs
- PropertyCollection.cs
- MimeMapping.cs
- CustomValidator.cs
- DurableOperationContext.cs
- HierarchicalDataBoundControl.cs
- TrackingMemoryStreamFactory.cs
- FunctionDefinition.cs
- XmlSchemaExternal.cs
- TaskHelper.cs
- xml.cs
- QueryResponse.cs
- BaseInfoTable.cs
- ListBindingConverter.cs
- EntitySqlQueryBuilder.cs
- initElementDictionary.cs
- CompositeTypefaceMetrics.cs
- VoiceInfo.cs
- TraceSource.cs
- XmlSchemaGroupRef.cs
- DocobjHost.cs
- SqlGenericUtil.cs
- WebPartCloseVerb.cs
- ContextMenuAutomationPeer.cs
- ProxySimple.cs
- UnsafeNativeMethodsTablet.cs
- TextServicesCompartmentEventSink.cs
- TableNameAttribute.cs
- SerializationSectionGroup.cs
- ObjectNavigationPropertyMapping.cs
- BaseValidator.cs
- HtmlTable.cs
- CLRBindingWorker.cs
- COM2EnumConverter.cs
- ToolStripRenderer.cs
- ListViewGroupCollectionEditor.cs
- HostingEnvironmentSection.cs
- ServiceBehaviorElement.cs
- FutureFactory.cs
- WindowsSpinner.cs
- Root.cs
- FileAuthorizationModule.cs
- XmlHelper.cs
- TaiwanCalendar.cs
- ControlUtil.cs
- SqlTriggerAttribute.cs
- ProtocolImporter.cs
- InternalConfigRoot.cs
- RoutingTable.cs
- NativeActivityTransactionContext.cs
- TextTrailingWordEllipsis.cs
- X509Certificate.cs
- GacUtil.cs
- OracleParameterBinding.cs
- CompilerGlobalScopeAttribute.cs
- ExpressionConverter.cs
- MetafileHeader.cs
- StreamReader.cs
- ComboBoxAutomationPeer.cs
- NumberAction.cs
- ReadWriteSpinLock.cs
- BaseCodeDomTreeGenerator.cs
- TextViewSelectionProcessor.cs
- TimeSpanMinutesConverter.cs
- BuilderPropertyEntry.cs
- TableDetailsCollection.cs
- SliderAutomationPeer.cs
- DelegateTypeInfo.cs
- RequestTimeoutManager.cs
- MemberDomainMap.cs
- TreeNodeStyleCollection.cs
- SecurityPolicySection.cs
- PropertyChangedEventArgs.cs
- AssemblyHash.cs
- CreateParams.cs
- IsolatedStorageException.cs
- InlineObject.cs
- SyndicationDeserializer.cs
- WebSysDisplayNameAttribute.cs
- IPGlobalProperties.cs
- Keyboard.cs
- LicenseProviderAttribute.cs
- TemplatingOptionsDialog.cs
- ThreadPool.cs
- PenCursorManager.cs
- AsyncOperationLifetimeManager.cs
- Transform3D.cs
- CreateParams.cs