This documentation is archived and is not being maintained.

HtmlAnchor.RenderAttributes Method

Renders the HtmlAnchor control's attributes to the specified HtmlTextWriter object.

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

protected override void RenderAttributes(
	HtmlTextWriter writer


Type: System.Web.UI.HtmlTextWriter

The HtmlTextWriter that contains the output stream to render on the client.


The HRef contains a malformed URL.

If the value of the HRef property is a malformed URL, the RenderAttributes method throws an HttpException exception.

The following code example demonstrates how to override the RenderAttributes method in a custom server control so that specific title text, accessible as a ToolTip, is always displayed for the HtmlAnchor control.

<%@ 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" 
<html xmlns="" >
    <title>Custom HtmlAnchor - RenderAttributes - C# Example</title>
    <form id="Form1" method="post" runat="server">
      Top of Page

      <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>Jump to <a href="#HtmlAnchor1">HtmlAnchor1</a> above.</p>
      <p>&nbsp;</p>Bottom of Page
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. 

            // Write out the HtmlAnchor control's Title tag.
            writer.Write(" Title=\"Text from RenderAttributes.\"");

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0