Page.CreateHtmlTextWriter(TextWriter) Método

Definição

Cria um objeto HtmlTextWriter para renderizar o conteúdo da página.Creates an HtmlTextWriter object to render the page's content.

protected:
 virtual System::Web::UI::HtmlTextWriter ^ CreateHtmlTextWriter(System::IO::TextWriter ^ tw);
protected public:
 virtual System::Web::UI::HtmlTextWriter ^ CreateHtmlTextWriter(System::IO::TextWriter ^ tw);
protected 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 Overridable Function CreateHtmlTextWriter (tw As TextWriter) As HtmlTextWriter
Protected Friend Overridable Function CreateHtmlTextWriter (tw As TextWriter) As HtmlTextWriter

Parâmetros

tw
TextWriter

O TextWriter usado para criar o HtmlTextWriter.The TextWriter used to create the HtmlTextWriter.

Retornos

HtmlTextWriter

Um HtmlTextWriter ou Html32TextWriter.An HtmlTextWriter or Html32TextWriter.

Exemplos

O exemplo de código a seguir usa o CreateHtmlTextWriter método para criar uma instância de um HtmlTextWriter objeto personalizado chamado MyHtmlTextWriter .The following code example uses the CreateHtmlTextWriter method to create an instance of a custom HtmlTextWriter object named MyHtmlTextWriter. O CreateHtmlTextWriter método é substituído na MyPage classe, que é derivada de Page , de modo que MyHtmlTextWriter renderiza os controles de servidor ASP.net quando a página é solicitada.The CreateHtmlTextWriter method is overridden in the MyPage class, which is derived from Page, so that MyHtmlTextWriter renders ASP.NET server controls when the page is requested. Observe que este exemplo impedirá o comportamento do adaptador TextWriter .Note that this example will prevent adapter TextWriter behavior.

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

Comentários

O CreateHtmlTextWriter método cria um TextWriter por meio da Browser Propriedade do Request objeto associado à solicitação de página.The CreateHtmlTextWriter method creates a TextWriter through the Browser property of the Request object associated with the page request. Você pode adicionar uma referência a um HtmlTextWriter na browserCaps seção de configuração.You can add a reference to an HtmlTextWriter in the browserCaps configuration section. Substitua o CreateHtmlTextWriter método para executar a pesquisa personalizada.Override the CreateHtmlTextWriter method to perform custom lookup.

Aplica-se a

Confira também