Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / xsp / System / Extensions / UI / ExtenderControl.cs / 1305376 / ExtenderControl.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Web.UI { using System; using System.Collections.Generic; using System.ComponentModel; using System.Diagnostics.CodeAnalysis; using System.Globalization; using System.Web; using System.Web.UI; using System.Web.Resources; using System.Web.Util; [ DefaultProperty("TargetControlID"), Designer("System.Web.UI.Design.ExtenderControlDesigner, " + AssemblyRef.SystemWebExtensionsDesign), NonVisualControl(), ParseChildren(true), PersistChildren(false), ToolboxItem("System.Web.UI.Design.ExtenderControlToolboxItem, " + AssemblyRef.SystemWebExtensionsDesign), ] public abstract class ExtenderControl : Control, IExtenderControl { private string _targetControlID; private IScriptManagerInternal _scriptManager; private new IPage _page; protected ExtenderControl() { } internal ExtenderControl(IScriptManagerInternal scriptManager, IPage page) { _scriptManager = scriptManager; _page = page; } private IPage IPage { get { if (_page != null) { return _page; } else { Page page = Page; if (page == null) { throw new InvalidOperationException(AtlasWeb.Common_PageCannotBeNull); } return new PageWrapper(page); } } } private IScriptManagerInternal ScriptManager { get { if (_scriptManager == null) { Page page = Page; if (page == null) { throw new InvalidOperationException(AtlasWeb.Common_PageCannotBeNull); } _scriptManager = System.Web.UI.ScriptManager.GetCurrent(page); if (_scriptManager == null) { throw new InvalidOperationException(String.Format(CultureInfo.InvariantCulture, AtlasWeb.Common_ScriptManagerRequired, ID)); } } return _scriptManager; } } [ Category("Behavior"), DefaultValue(""), IDReferenceProperty, ResourceDescription("ExtenderControl_TargetControlID"), SuppressMessage("Microsoft.Naming", "CA1709:IdentifiersShouldBeCasedCorrectly", MessageId = "ID"), ] public string TargetControlID { get { return (_targetControlID == null) ? String.Empty : _targetControlID; } set { _targetControlID = value; } } [ Browsable(false), DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden), EditorBrowsable(EditorBrowsableState.Never) ] public override bool Visible { get { return base.Visible; } set { throw new NotImplementedException(); } } ////// Finds the closest UpdatePanel in the parent controls of the specified control. /// /// The control for which we want the closest UpdatePanel. ///An UpdatePanel or null if none was found. private static UpdatePanel FindUpdatePanel(Control control) { Control parent = control.Parent; while (parent != null) { UpdatePanel parentPanel = parent as UpdatePanel; if (parentPanel != null) { return parentPanel; } parent = parent.Parent; } return null; } [SuppressMessage("Microsoft.Security", "CA2109:ReviewVisibleEventHandlers")] protected internal override void OnPreRender(EventArgs e) { base.OnPreRender(e); RegisterWithScriptManager(); } private void RegisterWithScriptManager() { if (String.IsNullOrEmpty(TargetControlID)) { throw new InvalidOperationException(String.Format(CultureInfo.InvariantCulture, AtlasWeb.ExtenderControl_TargetControlIDEmpty, ID)); } Control targetControl = FindControl(TargetControlID); if (targetControl == null) { throw new InvalidOperationException(String.Format(CultureInfo.InvariantCulture, AtlasWeb.ExtenderControl_TargetControlIDInvalid, ID, TargetControlID)); } // Check if the target control and its extender are in the same UpdatePanel if any: if (FindUpdatePanel(this) != FindUpdatePanel(targetControl)) { throw new InvalidOperationException(AtlasWeb.ExtenderControl_TargetControlDifferentUpdatePanel); } ScriptManager.RegisterExtenderControl(this, targetControl); } protected internal override void Render(HtmlTextWriter writer) { base.Render(writer); // DevDiv 97460: ScriptDescriptors only render if in server form, verify to avoid silently failing. IPage.VerifyRenderingInServerForm(this); // ScriptManager cannot be found in DesignMode, so do not attempt to register scripts. if (!DesignMode) { ScriptManager.RegisterScriptDescriptors(this); } } protected abstract IEnumerableGetScriptDescriptors(Control targetControl); [SuppressMessage("Microsoft.Design", "CA1024:UsePropertiesWhereAppropriate", Justification = "Implementation will likely return a new collection, which is too slow for a property")] protected abstract IEnumerable GetScriptReferences(); #region IExtenderControl Members IEnumerable IExtenderControl.GetScriptDescriptors(Control targetControl) { return GetScriptDescriptors(targetControl); } IEnumerable IExtenderControl.GetScriptReferences() { return GetScriptReferences(); } #endregion } } // 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
- TextParaClient.cs
- DataControlFieldHeaderCell.cs
- DependencyPropertyValueSerializer.cs
- CacheHelper.cs
- MenuItemCollection.cs
- ReflectEventDescriptor.cs
- SystemIcons.cs
- TransactionState.cs
- HighlightComponent.cs
- XmlSerializerVersionAttribute.cs
- ProtectedConfigurationSection.cs
- SchemaEntity.cs
- PageTheme.cs
- NativeCppClassAttribute.cs
- ListViewItemEventArgs.cs
- TextEmbeddedObject.cs
- TreeViewHitTestInfo.cs
- Validator.cs
- Ppl.cs
- UIElement3DAutomationPeer.cs
- OutputCacheProfile.cs
- Exceptions.cs
- PropertyGeneratedEventArgs.cs
- OperationCanceledException.cs
- OleDbDataReader.cs
- AttributeProviderAttribute.cs
- ExternalException.cs
- FormatConvertedBitmap.cs
- AdornerHitTestResult.cs
- Win32.cs
- DesignerRegion.cs
- PathFigureCollection.cs
- ApplicationProxyInternal.cs
- SqlInternalConnection.cs
- IArgumentProvider.cs
- ProvidePropertyAttribute.cs
- Baml2006SchemaContext.cs
- DependencyObjectValidator.cs
- remotingproxy.cs
- DelayedRegex.cs
- OpCodes.cs
- InfoCardTraceRecord.cs
- MultiAsyncResult.cs
- SchemaDeclBase.cs
- FontSizeConverter.cs
- ProviderBase.cs
- WCFServiceClientProxyGenerator.cs
- RoutingChannelExtension.cs
- SolidColorBrush.cs
- GridViewRowEventArgs.cs
- SortFieldComparer.cs
- IdentifierService.cs
- CollectionType.cs
- HttpCachePolicy.cs
- CompiledQueryCacheEntry.cs
- WorkflowServiceBuildProvider.cs
- TreeBuilderXamlTranslator.cs
- HtmlPanelAdapter.cs
- Panel.cs
- Rotation3DKeyFrameCollection.cs
- CodeIdentifier.cs
- CodeVariableDeclarationStatement.cs
- ClientSideQueueItem.cs
- UserThread.cs
- BlockUIContainer.cs
- TextEndOfSegment.cs
- Tokenizer.cs
- TextParentUndoUnit.cs
- ResourcesBuildProvider.cs
- PolicyLevel.cs
- CoreSwitches.cs
- AsyncOperationContext.cs
- UpdateExpressionVisitor.cs
- ReceiveActivityDesigner.cs
- SchemaDeclBase.cs
- ScriptDescriptor.cs
- RequestTimeoutManager.cs
- BamlWriter.cs
- CompilationRelaxations.cs
- UserNameSecurityToken.cs
- PropertyMappingExceptionEventArgs.cs
- ViewCellSlot.cs
- Region.cs
- MultiSelector.cs
- ProgressChangedEventArgs.cs
- Matrix3D.cs
- PerfService.cs
- DataGridItemCollection.cs
- SmiXetterAccessMap.cs
- BasicExpressionVisitor.cs
- ThrowHelper.cs
- ExpressionBindings.cs
- InfiniteTimeSpanConverter.cs
- ClaimSet.cs
- LabelEditEvent.cs
- _UriSyntax.cs
- ResourcePermissionBase.cs
- HelpEvent.cs
- Point3DConverter.cs
- ReliableRequestSessionChannel.cs