HtmlInputRadioButton.RenderAttributes Method
Assembly: System.Web (in system.web.dll)
The RenderAttributes method writes the Value property as an attribute of the HtmlInputRadioButton control and then calls the base class's RenderAttributes method
The RenderAttributes method is used primarily by control developers extending the functionality of the HtmlInputRadioButton control.
The following code example demonstrates how to override the RenderAttributes method in a custom server control so that specific title text is always displayed for the HtmlInputRadioButton.
<%@ Page Language="VJ#" AutoEventWireup="True" %>
<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet.JSL.Samples" Assembly="Samples.AspNet.JSl" %>
<HTML>
<HEAD><title>Custom HtmlInputRadioButton - RenderAttributes - VJ# Example</title>
<script runat="server">
void Page_Load(Object sender, EventArgs e)
{
Div1.set_InnerHtml("");
} //Page_Load
void HtmlInputRadioButtonGroup1_ServerChange(Object sender,
System.EventArgs e)
{
// Diplay the value of the selected HtmlInputRadioButton control.
System.Web.UI.HtmlControls.HtmlInputRadioButton
htmlInputRadioButtonGroup1 = (System.Web.UI.HtmlControls.
HtmlInputRadioButton)sender;
Div1.set_InnerHtml("You change your selection to: "
+ htmlInputRadioButtonGroup1.get_Value());
} //HtmlInputRadioButtonGroup1_ServerChange
</script>
</HEAD>
<body>
<form id="Form1" method="post" runat="server">
<h3>Custom HtmlInputRadioButton - Method - VJ# RenderAttributes</h3>
<aspSample:CustomHtmlInputRadioButtonRenderAttributes
id="HtmlInputRadioButton1"
name="HtmlInputRadioButtonGroup1"
runat="server"
type="radio" checked
onserverchange="HtmlInputRadioButtonGroup1_ServerChange"
value="HtmlInputRadioButton1">HtmlInputRadioButton1
</aspSample:CustomHtmlInputRadioButtonRenderAttributes>
<br>
<aspSample:CustomHtmlInputRadioButtonRenderAttributes
id="HtmlInputRadioButton2"
name="HtmlInputRadioButtonGroup1"
runat="server"
type="radio"
onserverchange="HtmlInputRadioButtonGroup1_ServerChange"
value="HtmlInputRadioButton2">HtmlInputRadioButton2
</aspSample:CustomHtmlInputRadioButtonRenderAttributes><br>
<p>
<input type="submit" value="Submit" id="Submit1" name="Submit1" runat="server">
</p>
<DIV
id="Div1"
runat="server"
style="DISPLAY: inline; WIDTH: 256px; HEIGHT: 15px"
ms_positioning="FlowLayout" />
</form>
</body>
</HTML>
package Samples.AspNet.JSl.Samples;
public class CustomHtmlInputRadioButtonRenderAttributes
extends System.Web.UI.HtmlControls.HtmlInputRadioButton
{
protected void RenderAttributes(System.Web.UI.HtmlTextWriter writer)
{
// Call the base class's RenderAttributes method.
super.RenderAttributes(writer);
// Write out the control's Title tag.
writer.Write(" Title=\"Option " + this.get_Value() + "\"");
} //RenderAttributes
} //CustomHtmlInputRadioButtonRenderAttributes
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.