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HtmlInputButton.RenderAttributes Method

Renders the attributes into the specified writer and then calls the RenderAttributes method.

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

protected override void RenderAttributes(
	HtmlTextWriter writer


Type: System.Web.UI.HtmlTextWriter
An HtmlTextWriter that receives the rendered content.

The RenderAttributes method overrides the base HtmlControl.RenderAttributes.method. RenderAttributes is used primarily by control developers.

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

<%@ 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 HtmlInputButton - RenderAttributes - C# Example</title>
    <script runat="server">
      void Page_Load(Object sender, EventArgs e)
        HtmlInputButton1.Attributes.Add("onclick","alert('Hello client-side world.');");

      void HtmlInputButton1_ServerClick(Object sender, EventArgs e)
        Div1.InnerHtml = "Hello server-side world.";
    <form id="Form1" method="post" runat="server">
      <h3>Custom HtmlInputButton - RenderAttributes - C# Example</h3>

        value="Html Input Button"

      <div id="Div1" runat="server"
        style="DISPLAY: inline; WIDTH: 256px; HEIGHT: 15px" />

using System.Web;
using System.Security.Permissions;

namespace Samples.AspNet.CS.Controls
    [AspNetHostingPermission(SecurityAction.Demand, Level = AspNetHostingPermissionLevel.Minimal)]
    public sealed class CustomHtmlInputButtonRenderAttributes : System.Web.UI.HtmlControls.HtmlInputButton
        protected override void RenderAttributes(System.Web.UI.HtmlTextWriter writer)

            // Call the base class's RenderAttributes method.

            // Write out the HtmlInputButton 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.