Recherche de contrôles dans un contrôle personnalisé ITemplated

Question

J'ai créé un contrôle serveur personnalisé avec des propriétés implémentant l'interface ITemplate. Il s'agit essentiellement d'une boîte de panneau personnalisé avec un en-tête, un corps & footer. Voici le code:

using System; 
using System.Collections.Generic; 
using System.ComponentModel; 
using System.Linq; 
using System.Text; 
using System.Web; 
using System.Web.UI; 
using System.Web.UI.WebControls; 
using System.Web.UI.HtmlControls; 

namespace ACME.Web.Controls 
{ 
    [ParseChildren(true)] 
    [DefaultProperty("Text")] 
    [ToolboxData("")] 
    public class Panel : WebControl, INamingContainer 
    { 

     private ITemplate _header = null; 
     private Control _headerControl = null; 
     private Control _headerContainerControl = null; 

     private ITemplate _content = null; 
     private Control _contentControl = null; 
     private Control _contentContainerControl = null; 

     private ITemplate _footer = null; 
     private Control _footerControl = null; 
     private Control _footerContainerControl = null; 

     [PersistenceMode(PersistenceMode.InnerProperty), 
      TemplateContainer(typeof(TemplateControl)), 
      TemplateInstance(TemplateInstance.Single)] 
     public ITemplate Header 
     { 
      get { return _header; } 
      set { _header = value; } 
     } 

     [PersistenceMode(PersistenceMode.InnerProperty), 
      TemplateContainer(typeof(TemplateControl)), 
      TemplateInstance(TemplateInstance.Single)] 
     public ITemplate Content 
     { 
      get { return _content; } 
      set { _content = value; } 
     } 

     [PersistenceMode(PersistenceMode.InnerProperty), 
      TemplateContainer(typeof(TemplateControl)), 
      TemplateInstance(TemplateInstance.Single)] 
     public ITemplate Footer 
     { 
      get { return _footer; } 
      set { _footer = value; } 
     } 

     protected override void CreateChildControls() 
     { 
      Controls.Clear(); 

      if (this.ID == null) this.ID = "panel-" + Guid.NewGuid().ToString(); 

      this.CssClass = "panel"; 

      if (this.Header == null) 
      { 
       this.CssClass += " without-header"; 
      } 
      else 
      { 
       this.CssClass += " with-header"; 

       _headerControl = new System.Web.UI.WebControls.Panel { CssClass = "panel-header" }; 
       _headerControl.Controls.Add(new System.Web.UI.WebControls.Panel { CssClass = "panel-header-l" }); 
       _headerControl.Controls.Add(new System.Web.UI.WebControls.Panel { CssClass = "panel-header-c" }); 
       _headerControl.Controls.Add(new System.Web.UI.WebControls.Panel { CssClass = "panel-header-r" }); 

       _headerControl.Controls[1].Controls.Add(new System.Web.UI.WebControls.Panel { CssClass = "panel-header-wrapper" }); 
       _headerControl.Controls[1].Controls[0].Controls.Add(new System.Web.UI.WebControls.Panel { CssClass = "wrapper" }); 

       _headerContainerControl = new Control(); 
       if (this.Header != null) 
       { 
        Header.InstantiateIn(_headerContainerControl); 
       } 
       else 
       { 
        _headerContainerControl.Controls.Add(new LiteralControl("Test")); 
       } 

       _headerControl.Controls[1].Controls[0].Controls[0].Controls.Add(_headerContainerControl); 
       Controls.Add(_headerControl); 
      } 

      _contentControl = new System.Web.UI.WebControls.Panel { CssClass = "panel-body" }; 
      _contentControl.Controls.Add(new System.Web.UI.WebControls.Panel { CssClass = "panel-body-t" }); 
      _contentControl.Controls[0].Controls.Add(new System.Web.UI.WebControls.Panel { CssClass = "panel-body-t-l" }); 
      _contentControl.Controls[0].Controls.Add(new System.Web.UI.WebControls.Panel { CssClass = "panel-body-t-c" }); 
      _contentControl.Controls[0].Controls.Add(new System.Web.UI.WebControls.Panel { CssClass = "panel-body-t-r" }); 

      _contentControl.Controls.Add(new System.Web.UI.WebControls.Panel { CssClass = "panel-body-m" }); 
      _contentControl.Controls[1].Controls.Add(new System.Web.UI.WebControls.Panel { CssClass = "panel-body-m-l" }); 
      _contentControl.Controls[1].Controls.Add(new System.Web.UI.WebControls.Panel { CssClass = "panel-body-m-c" }); 
      _contentControl.Controls[1].Controls.Add(new System.Web.UI.WebControls.Panel { CssClass = "panel-body-m-r" }); 

      _contentControl.Controls[1].Controls[1].Controls.Add(new System.Web.UI.WebControls.Panel { CssClass = "panel-body-wrapper" }); 
      _contentControl.Controls[1].Controls[1].Controls[0].Controls.Add(new System.Web.UI.WebControls.Panel { CssClass = "scroll-wrapper" }); 

      _contentControl.Controls.Add(new System.Web.UI.WebControls.Panel { CssClass = "panel-body-b" }); 
      _contentControl.Controls[2].Controls.Add(new System.Web.UI.WebControls.Panel { CssClass = "panel-body-b-l" }); 
      _contentControl.Controls[2].Controls.Add(new System.Web.UI.WebControls.Panel { CssClass = "panel-body-b-c" }); 
      _contentControl.Controls[2].Controls.Add(new System.Web.UI.WebControls.Panel { CssClass = "panel-body-b-r" }); 

      _contentContainerControl = new Control(); 
      if (this.Content != null) 
      { 
       Content.InstantiateIn(_contentContainerControl); 
      } 
      else 
      { 
       _contentContainerControl.Controls.Add(new LiteralControl("Test")); 
      } 

      _contentControl.Controls[1].Controls[1].Controls[0].Controls[0].Controls.Add(_contentContainerControl); 
      Controls.Add(_contentControl); 

      if (this.Footer == null) 
      { 
       this.CssClass += " without-footer"; 
      } 
      else 
      { 
       this.CssClass += " with-footer"; 
       _footerControl = new System.Web.UI.WebControls.Panel { CssClass = "panel-footer" }; 

       _footerContainerControl = new Control(); 
       if (this.Footer != null) 
       { 
        Footer.InstantiateIn(_footerContainerControl); 
       } 
       else 
       { 
        _footerContainerControl.Controls.Add(new LiteralControl("Test")); 
       } 

       _footerControl.Controls.Add(_footerContainerControl); 
       Controls.Add(_footerControl); 
      } 

     } 

     protected override HtmlTextWriterTag TagKey 
     { 
      get { return HtmlTextWriterTag.Div; } 
     } 

    } 

} 

Cela fonctionne parfaitement, mais on ne peut pas vraiment accéder aux contrôles dans les ITemplates à partir du code derrière. J'aimerais pouvoir ajouter et supprimer des contrôles dans les régions ITemplate de mon contrôle personnalisé. Quelle serait la meilleure façon de faire cela?

Answer 1

vous pouvez essayer container.findcontrol (« »)