Page.CreateHtmlTextWriter(TextWriter) Metode

Definisi

Ruang nama:

System.Web.UI

Rakitan:

System.Web.dll

HtmlTextWriter Membuat objek untuk merender konten halaman.

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

Parameter

tw

TextWriter

yang TextWriter digunakan untuk membuat HtmlTextWriter.

Mengembalikan

HtmlTextWriter

Atau HtmlTextWriterHtml32TextWriter.

Contoh

Contoh kode berikut menggunakan metode untuk membuat instans CreateHtmlTextWriter objek kustom HtmlTextWriter bernama MyHtmlTextWriter. Metode CreateHtmlTextWriter ini ditimpa di MyPage kelas , yang berasal dari Page, sehingga MyHtmlTextWriter merender ASP.NET kontrol server ketika halaman diminta. Perhatikan bahwa contoh ini akan mencegah perilaku adaptor 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

Keterangan

Metode ini CreateHtmlTextWriter membuat TextWriter melalui Browser properti objek yang Request terkait dengan permintaan halaman. Anda dapat menambahkan referensi ke HtmlTextWriter di bagian browserCaps konfigurasi. Ambil alih CreateHtmlTextWriter metode untuk melakukan pencarian kustom.

Lihat juga

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