HtmlButton Class

HtmlButton Class

Allows programmatic access to the HTML <button> tag on the server.

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

public class HtmlButton : HtmlContainerControl, IPostBackEventHandler
public class HtmlButton extends HtmlContainerControl implements IPostBackEventHandler
public class HtmlButton extends HtmlContainerControl implements IPostBackEventHandler

The <button> element allows Web developers to create user interface (UI) form buttons that can be composed of embedded HTML elements, including other server controls.


The <button> element is defined in the HTML 4.0 specification and is supported only in Microsoft Internet Explorer version 4.0 and later. To create UI form buttons for use in other browsers, consider using the HtmlInputImage class.

To perform a set of custom instructions when the HtmlButton control is clicked, provide a custom event handler for the ServerClick event.


The HtmlButton control renders ECMAScript to the client browser. The client browser must have ECMAScript enabled for this control to function properly. For more information on client script, see Client Script in ASP.NET Web Pages.

For a list of initial property values for an instance of HtmlButton, see the HtmlButton constructor.

Caution noteCaution

This control can be used to display user input, which might include malicious client script. Check any information that is sent from a client for executable script, SQL statements, or other code before displaying it in your application. ASP.NET provides an input request validation feature to block script and HTML in user input. Validation server controls are also provided to assess user input. For more information, see Validation Server Control Syntax.

The following code example demonstrates how to use the ServerClick event to display the name entered in the text box.

<%@ Page Language="C#" AutoEventWireup="True" %>

    <script language="C#" runat=server>

      protected void FancyBtn_Click(object sender, EventArgs e)
        Message.InnerHtml = "Your name is: " + Name.Value; 
          <form method=post runat=server>
            <h3> Enter Name: <input id="Name" type=text size=40 runat=server>
             <button OnServerClick=" FancyBtn_Click" runat=server id="BUTTON1">
               <b><I> I'm a fancy HTML 4.0 button </I> </b> 
             <span id="Message" runat=server></span>

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 98, Windows 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

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

.NET Framework

Supported in: 2.0, 1.1, 1.0

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