Button.AddAttributesToRender Method (HtmlTextWriter)


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This API supports the product infrastructure and is not intended to be used directly from your code.

Adds the attributes of the Button control to the output stream for rendering on the client.

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

protected override void AddAttributesToRender(
	HtmlTextWriter writer


Type: System.Web.UI.HtmlTextWriter

An System.Web.UI.HtmlTextWriter that contains the output stream to render on the client.

The following code example demonstrates how to override the AddAttributesToRender method in a custom server control, so that the Button text always displays in red.

<%@ Page language="c#" %>
<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet.CS.Controls" Assembly="Samples.AspNet.CS" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
<html xmlns="http://www.w3.org/1999/xhtml" >
    <title>Custom Button - AddAttributesToRender - C# Example</title>
    <form id="Form1" method="post" runat="server">
      <h3>Custom Button - AddAttributesToRender - C# Example</h3>

        Text="Button" />

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

namespace Samples.AspNet.CS.Controls
    [AspNetHostingPermission(SecurityAction.Demand, Level = AspNetHostingPermissionLevel.Minimal)]
    public sealed class CustomButtonAddAttributesToRender : System.Web.UI.WebControls.Button
    protected override void AddAttributesToRender(System.Web.UI.HtmlTextWriter writer) 
      // Add a client-side onclick event to the button.
      writer.AddAttribute(System.Web.UI.HtmlTextWriterAttribute.Onclick, "alert('Hello World');");

      // Update the text of the button to be shown in the color Red
      writer.AddStyleAttribute(System.Web.UI.HtmlTextWriterStyle.Color, "Red");

      // Call the base's AddAttributesToRender method

.NET Framework
Available since 1.1
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