Page.CreateHtmlTextWriter(TextWriter) Méthode

Définition

Espace de noms:

System.Web.UI

Assembly:

System.Web.dll

Crée un HtmlTextWriter objet pour afficher le contenu de la page.

protected public:
 virtual System::Web::UI::HtmlTextWriter ^ CreateHtmlTextWriter(System::IO::TextWriter ^ tw);

protected internal virtual System.Web.UI.HtmlTextWriter CreateHtmlTextWriter(System.IO.TextWriter tw);

abstract member CreateHtmlTextWriter : System.IO.TextWriter -> System.Web.UI.HtmlTextWriter
override this.CreateHtmlTextWriter : System.IO.TextWriter -> System.Web.UI.HtmlTextWriter

Protected Friend Overridable Function CreateHtmlTextWriter (tw As TextWriter) As HtmlTextWriter

Paramètres

tw

TextWriter

Utilisé TextWriter pour créer le HtmlTextWriter.

Retours

HtmlTextWriter

Html32TextWriterOu HtmlTextWriter .

Exemples

L’exemple de code suivant utilise la CreateHtmlTextWriter méthode pour créer une instance d’un objet personnalisé HtmlTextWriter nommé MyHtmlTextWriter. La CreateHtmlTextWriter méthode est substituée dans la MyPage classe, qui est dérivée de Page, de sorte que MyHtmlTextWriter le rendu ASP.NET contrôles serveur lorsque la page est demandée. Notez que cet exemple empêche le comportement de l’adaptateur TextWriter .

namespace WebPage
{
   using System;
   using System.IO;
   using System.Web.UI;

   public class MyPage : Page
   {
      public MyPage():base()
      {
      }

      [System.Security.Permissions.PermissionSet(System.Security.Permissions.SecurityAction.Demand, Name="FullTrust")] 
      protected override HtmlTextWriter CreateHtmlTextWriter(TextWriter writer)
      {
         return new MyHtmlTextWriter(writer);
      }

      [System.Security.Permissions.PermissionSet(System.Security.Permissions.SecurityAction.Demand, Name="FullTrust")] 
      protected override void Render(HtmlTextWriter writer)
      {         
         // Write a Font control.
         writer.AddAttribute("color", "red");
         writer.AddAttribute("size", "6pt");
         writer.RenderBeginTag(HtmlTextWriterTag.Font);
         writer.Write("<br>" + "The time on the server:<br> " + System.DateTime.Now.ToLongTimeString());
         writer.RenderEndTag();
      }
   }

   public class MyHtmlTextWriter : HtmlTextWriter
   {
      public MyHtmlTextWriter(TextWriter writer):base(writer)
      {
         writer.Write("<font color=blue> 'MyHtmlTextWriter' is used for rendering.</font>");
      }
   }
}

Imports System.IO
Imports System.Web.UI

Namespace WebPage

    
   Public Class MyPage
      Inherits Page
      
      Public Sub New()
         MyBase.New()
      End Sub

      <System.Security.Permissions.PermissionSetAttribute(System.Security.Permissions.SecurityAction.Demand, Name:="FullTrust")> _
      Protected Overrides Function CreateHtmlTextWriter(ByVal writer As TextWriter) As HtmlTextWriter
         Return New MyHtmlTextWriter(writer)
      End Function 'CreateHtmlTextWriter

      <System.Security.Permissions.PermissionSetAttribute(System.Security.Permissions.SecurityAction.Demand, Name:="FullTrust")> _
      Protected Overrides Sub Render(ByVal writer As HtmlTextWriter)
         ' Writes a Font control.
         writer.AddAttribute("color", "red")
         writer.AddAttribute("size", "6pt")
         writer.RenderBeginTag(HtmlTextWriterTag.Font)
         writer.Write(("<br>" + "The time on the server:<br> " + System.DateTime.Now.ToLongTimeString()))
         writer.RenderEndTag()
      End Sub
   End Class
    

   Public Class MyHtmlTextWriter
      Inherits HtmlTextWriter
      
      Public Sub New(writer As TextWriter)
         MyBase.New(writer)
         writer.Write("<font color=blue> 'MyHtmlTextWriter' is used for rendering.</font>")
      End Sub
   End Class
End Namespace 'WebPage

Remarques

La CreateHtmlTextWriter méthode crée une TextWriter propriété via l’objet RequestBrowser associé à la demande de page. Vous pouvez ajouter une référence à une HtmlTextWriterbrowserCaps section de configuration. Remplacez la CreateHtmlTextWriter méthode pour effectuer une recherche personnalisée.

Voir aussi

• HtmlTextWriter
• Html32TextWriter
• HttpBrowserCapabilities
• CreateHtmlTextWriterFromType(TextWriter, Type)
• ControlAdapter