Bagikan melalui

HtmlAnchor.RenderAttributes(HtmlTextWriter) Metode

Definisi

Ruang nama:
System.Web.UI.HtmlControls
Rakitan:
System.Web.dll

Merender HtmlAnchor atribut kontrol ke objek yang ditentukan HtmlTextWriter .

protected:
 override void RenderAttributes(System::Web::UI::HtmlTextWriter ^ writer);
protected override void RenderAttributes(System.Web.UI.HtmlTextWriter writer);
override this.RenderAttributes : System.Web.UI.HtmlTextWriter -> unit
Protected Overrides Sub RenderAttributes (writer As HtmlTextWriter)

Parameter

writer
HtmlTextWriter

HtmlTextWriter yang berisi aliran output untuk dirender pada klien.

Pengecualian

HttpException

HRef berisi URL yang salah format.

Contoh

Contoh kode berikut menunjukkan cara mengambil alih RenderAttributes metode dalam kontrol server kustom sehingga teks judul tertentu, yang dapat diakses sebagai TipsAlat, selalu ditampilkan untuk HtmlAnchor kontrol.

<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet.CS.Controls" Assembly="Samples.AspNet.CS" %>
<%@ Page Language="C#" AutoEventWireup="True" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
  <head>
    <title>Custom HtmlAnchor - RenderAttributes - C# Example</title>
  </head>
  <body>
    <form id="Form1" method="post" runat="server">
      Top of Page
      <<aspSample:CustomHtmlAnchorRenderAttributes
           id="HtmlAnchor1"
           runat="server"
           name="HtmlAnchor1">HtmlAnchor1</aspSample:CustomHtmlAnchorRenderAttributes>>

      <h3>Custom HtmlAnchor - RenderAttributes - C# Example</h3>
      <p>Place the mouse pointer over the HtmlAnchor1 tag (above). A Title attribute was added from within the RenderAttributes override method.</p>
      <p>Jump to <a href="#HtmlAnchor2">HtmlAnchor2</a> below.</p>

      <p> </p><p> </p><p> </p><p> </p>
      <p> </p><p> </p><p> </p><p> </p>
      <p> </p><p> </p><p> </p><p> </p>
      <p> </p><p> </p><p> </p><p> </p>
      <p> </p><p> </p><p> </p><p> </p>
      <p> </p><p> </p><p> </p><p> </p>
      <p> </p><p> </p><p> </p><p> </p>
      <p> </p><p> </p><p> </p><p> </p>
      <p> </p><p> </p><p> </p><p> </p>
      <p> </p><p> </p><p> </p><p> </p>

      <p>Jump to <a href="#HtmlAnchor1">HtmlAnchor1</a> above.</p>
      <p> </p>Bottom of Page
      <<aspSample:CustomHtmlAnchorRenderAttributes
           id="HtmlAnchor2"
           runat="server"
           name="HtmlAnchor2">HtmlAnchor2</aspSample:CustomHtmlAnchorRenderAttributes>>
    </form>
  </body>
</html>

<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet.VB.Controls" Assembly="Samples.AspNet.VB" %>
<%@ Page Language="VB" AutoEventWireup="True" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
  <head>
    <title>Custom HtmlAnchor - RenderAttributes - Visual Basic Example</title>
  </head>
  <body>
    <form id="Form1" method="post" runat="server">
      Top of Page
      <<aspSample:CustomHtmlAnchorRenderAttributes
           id="HtmlAnchor1"
           runat="server"
           name="HtmlAnchor1">HtmlAnchor1</aspSample:CustomHtmlAnchorRenderAttributes>>

      <h3>Custom HtmlAnchor - RenderAttributes - Visual Basic Example</h3>
      <p>Place the mouse pointer over the HtmlAnchor1 tag (above). A Title attribute was added from within the RenderAttributes override method.</p>
      <p>Jump to <a href="#HtmlAnchor2">HtmlAnchor2</a> below.</p>

      <p> </p><p> </p><p> </p><p> </p>
      <p> </p><p> </p><p> </p><p> </p>
      <p> </p><p> </p><p> </p><p> </p>
      <p> </p><p> </p><p> </p><p> </p>
      <p> </p><p> </p><p> </p><p> </p>
      <p> </p><p> </p><p> </p><p> </p>
      <p> </p><p> </p><p> </p><p> </p>
      <p> </p><p> </p><p> </p><p> </p>
      <p> </p><p> </p><p> </p><p> </p>
      <p> </p><p> </p><p> </p><p> </p>

      <p>Jump to <a href="#HtmlAnchor1">HtmlAnchor1</a> above.</p>
      <p> </p>Bottom of Page
      <<aspSample:CustomHtmlAnchorRenderAttributes
           id="HtmlAnchor2"
           runat="server"
           name="HtmlAnchor2">HtmlAnchor2</aspSample:CustomHtmlAnchorRenderAttributes>>
    </form>
  </body>
</html>

using System.Web;
using System.Security.Permissions;
namespace Samples.AspNet.CS.Controls
{
    [AspNetHostingPermission(SecurityAction.Demand, Level = AspNetHostingPermissionLevel.Minimal)]
    public sealed class CustomHtmlAnchorRenderAttributes : System.Web.UI.HtmlControls.HtmlAnchor
    {
        protected override void RenderAttributes(System.Web.UI.HtmlTextWriter writer)
        {
            // Call the base class's RenderAttributes method.
            base.RenderAttributes(writer);
            
            // Write out the HtmlAnchor control's Title tag.
            writer.Write(" Title=\"Text from RenderAttributes.\"");
        }
    }
}

Imports System.Web
Imports System.Security.Permissions

Namespace Samples.AspNet.VB.Controls
    <AspNetHostingPermission(SecurityAction.Demand, Level:=AspNetHostingPermissionLevel.Minimal)> _
    Public NotInheritable Class CustomHtmlAnchorRenderAttributes
        Inherits System.Web.UI.HtmlControls.HtmlAnchor

        Protected Overrides Sub RenderAttributes(ByVal writer As System.Web.UI.HtmlTextWriter)

            ' Call the base class's RenderAttributes method.
            MyBase.RenderAttributes(writer)

            ' Write out the HtmlAnchor control's Title tag.
            writer.Write(" Title=""Text from RenderAttributes.""")
        End Sub
    End Class
End Namespace

Keterangan

Jika nilai HRef properti adalah URL yang salah bentuk, RenderAttributes metode akan melemparkan HttpException pengecualian.

Berlaku untuk

Lihat juga