HtmlButton.RenderAttributes Method
.NET Framework 3.0
Renders the HtmlButton control's attributes to the specified HtmlTextWriter object.
Namespace: System.Web.UI.HtmlControls
Assembly: System.Web (in system.web.dll)
Assembly: System.Web (in system.web.dll)
protected void RenderAttributes ( HtmlTextWriter writer )
protected override function RenderAttributes ( writer : HtmlTextWriter )
Not applicable.
Parameters
- writer
The HtmlTextWriter that contains the output stream to render on the client.
The RenderAttributes method writes the onclick attribute of the rendered HtmlButton control, and then calls the base HtmlControl.RenderAttributes method.
The RenderAttributes method is used primarily by control developers extending the functionality of the HtmlButton control.
The following code example demonstrates how to override the RenderAttributes method in a custom server control so that a title is always displayed for the HtmlButton control.
<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet.JSL.Controls" Assembly="Samples.AspNet.JSL" %>
<%@ Page Language="VJ#" AutoEventWireup="True" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title>Custom HtmlButton - RenderAttributes - VJ# Example</title>
<script runat="server">
void Page_Load(Object sender, EventArgs e)
{
HtmlButton1.get_Attributes().Add("onclick",
"alert('Hello client-side world.');");
} //Page_Load
void HtmlButton1_ServerClick(Object sender, EventArgs e)
{
Div1.set_InnerHtml("Hello server-side world.");
} //HtmlButton1_ServerClick
</script>
</head>
<body>
<form id="Form1" method="post" runat="server">
<h3>Custom HtmlButton - RenderAttributes - VJ# Example</h3>
<aspSample:CustomHtmlButtonRenderAttributes
id="HtmlButton1"
runat="server"
type="button"
onserverclick="HtmlButton1_ServerClick"
name="HtmlButton1">Html Button</aspSample:CustomHtmlButtonRenderAttributes>
<div id="Div1" runat="server"
style="DISPLAY: inline; WIDTH: 256px; HEIGHT: 15px" />
</form>
</body>
</html>
package Samples.AspNet.JSL.Controls;
public class CustomHtmlButtonRenderAttributes
extends System.Web.UI.HtmlControls.HtmlButton
{
protected void RenderAttributes(System.Web.UI.HtmlTextWriter writer)
{
// Call the base's RenderAttributes method.
super.RenderAttributes(writer);
// Write out Title tag
writer.Write(" Title=\"Text from RenderAttributes.\"");
} //RenderAttributes
} //CustomHtmlButtonRenderAttributes
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