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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.\"");

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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