WebPartZone.cs source code in C# .NET

Source code for the .NET framework in C#

                        

Code:

/ FXUpdate3074 / FXUpdate3074 / 1.1 / untmp / whidbey / QFE / ndp / fx / src / xsp / System / Web / UI / WebParts / WebPartZone.cs / 2 / WebPartZone.cs

                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

namespace System.Web.UI.WebControls.WebParts { 
 
    using System;
    using System.Collections; 
    using System.ComponentModel;
    using System.Security.Permissions;
    using System.Web.UI;
    using System.Web.UI.WebControls; 

    ///  
    /// Zone that hosts WebPart controls, and contains a template to specify the contained WebParts. 
    /// 
    [ 
    Designer("System.Web.UI.Design.WebControls.WebParts.WebPartZoneDesigner, " + AssemblyRef.SystemDesign),
    SupportsEventValidation,
    ]
    [AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)] 
    [AspNetHostingPermission(SecurityAction.InheritanceDemand, Level=AspNetHostingPermissionLevel.Minimal)]
    public class WebPartZone : WebPartZoneBase { 
 
        private ITemplate _zoneTemplate;
        private bool _registrationComplete; 

        [
        Browsable(false),
        DefaultValue(null), 
        PersistenceMode(PersistenceMode.InnerProperty),
        TemplateInstance(TemplateInstance.Single) 
        ] 
        public virtual ITemplate ZoneTemplate {
            get { 
                return _zoneTemplate;
            }
            set {
                if (!DesignMode) { 
                    if (_registrationComplete) {
                        throw new InvalidOperationException(SR.GetString(SR.WebPart_SetZoneTemplateTooLate)); 
                    } 
                }
                _zoneTemplate = value; 
            }
        }

        private void AddWebPartToList(WebPartCollection webParts, Control control) { 
            WebPart part = control as WebPart;
 
            // We used to throw an exception if the template contained a non-whitespace literal. 
            // However, sometimes Venus would insert 
tags between the server controls // in the template. So, we now just ignore all literals. if ((part == null) && !(control is LiteralControl)) { WebPartManager manager = WebPartManager; if (manager != null) { part = manager.CreateWebPart(control); } else { part = WebPartManager.CreateWebPartStatic(control); } } if (part != null) { webParts.Add(part); } } protected internal override WebPartCollection GetInitialWebParts() { WebPartCollection webParts = new WebPartCollection(); if (ZoneTemplate != null) { // PERF: Instantiate the template into a special control, that does nothing when a child control // is added. This is more performant because the child control is never parented to the temporary // control, it's ID is never generated, etc. Control container = new NonParentingControl(); ZoneTemplate.InstantiateIn(container); if (container.HasControls()) { ControlCollection controls = container.Controls; foreach (Control control in controls) { if (control is ContentPlaceHolder) { if (control.HasControls()) { Control[] children = new Control[control.Controls.Count]; control.Controls.CopyTo(children, 0); foreach (Control child in children) { AddWebPartToList(webParts, child); } } } else { AddWebPartToList(webParts, control); } } } } return webParts; } protected internal override void OnInit(EventArgs e) { base.OnInit(e); _registrationComplete = true; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.

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