Page.CreateHtmlTextWriter Method (TextWriter)

 

Creates an HtmlTextWriter object to render the page's content.

Namespace:   System.Web.UI
Assembly:  System.Web (in System.Web.dll)

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

Parameters

tw
Type: System.IO.TextWriter

The TextWriter used to create the HtmlTextWriter.

The CreateHtmlTextWriter method creates a TextWriter through the Browser property of the Request object associated with the page request. You can add a reference to an HtmlTextWriter in the browserCaps configuration section. Override the CreateHtmlTextWriter method to perform custom lookup.

The following code example uses the CreateHtmlTextWriter method to create an instance of a custom HtmlTextWriter object named MyHtmlTextWriter. 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. Note that this example will prevent adapter TextWriter behavior.

Imports System
Imports System.IO
Imports System.Web.UI

Namespace WebPage


   Public Class MyPage
      Inherits Page

      Public Sub New()
         MyBase.New()
      End Sub 'NewNew

      <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 'Render
   End Class 'MyPage


   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 'NewNew
   End Class 'MyHtmlTextWriter
End Namespace 'WebPage

.NET Framework
Available since 1.1
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