78 lines
2.7 KiB
C#
78 lines
2.7 KiB
C#
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//------------------------------------------------------------------------------
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// <copyright file="CompositeControl.cs" company="Microsoft">
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// Copyright (c) Microsoft Corporation. All rights reserved.
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// </copyright>
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//------------------------------------------------------------------------------
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namespace System.Web.UI.WebControls {
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using System.ComponentModel;
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using System.Web.Util;
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/// <devdoc>
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/// Base class for composite controls -- controls that contain other controls and reuse their functionality
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/// via class composition. See Chapter 12 in "Developing Microsoft ASP.NET Server Controls and Components."
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/// The following classes have copied code from this class (look for "Copied from CompositeControl" comment):
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/// - ChangePassword
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/// - Login
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/// - LoginView
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/// - SiteMapPath
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/// </devdoc>
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[
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Designer("System.Web.UI.Design.WebControls.CompositeControlDesigner, " + AssemblyRef.SystemDesign)
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]
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public abstract class CompositeControl : WebControl, INamingContainer, ICompositeControlDesignerAccessor {
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/// <devdoc>
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/// Ensure that the child controls have been created before returning the controls collection
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/// </devdoc>
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public override ControlCollection Controls {
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get {
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EnsureChildControls();
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return base.Controls;
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}
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}
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public override bool SupportsDisabledAttribute {
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get {
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return RenderingCompatibility < VersionUtil.Framework40;
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}
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}
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/// <devdoc>
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/// Perform our own databinding, then perform our child controls' databinding.
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/// Does not call Base.DataBind(), since we need to call EnsureChildControls() between
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/// OnDataBinding() and DataBindChildren().
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/// </devdoc>
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public override void DataBind() {
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OnDataBinding(EventArgs.Empty);
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EnsureChildControls();
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DataBindChildren();
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}
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protected virtual void RecreateChildControls() {
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ChildControlsCreated = false;
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EnsureChildControls();
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}
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// Needed so the CompositeControl renders correctly in the designer, even when it does not have
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// an associated ControlDesigner (i.e. it is a child control of another CompositeControl).
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protected internal override void Render(HtmlTextWriter writer) {
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if (DesignMode) {
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EnsureChildControls();
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}
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base.Render(writer);
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}
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#region ICompositeControlDesignerAccessor implementation
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void ICompositeControlDesignerAccessor.RecreateChildControls() {
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RecreateChildControls();
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}
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#endregion
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}
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}
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