RadioButtonList.Render Method
.NET Framework 3.0
Displays the RadioButtonList control on the client.
Namespace: System.Web.UI.WebControls
Assembly: System.Web (in system.web.dll)
Assembly: System.Web (in system.web.dll)
protected void Render ( HtmlTextWriter writer )
protected internal override function Render ( writer : HtmlTextWriter )
Not applicable.
Parameters
- writer
A System.Web.UI.HtmlTextWriter that contains the output stream for rendering on the client.
This method is used primarily by control developers, when deriving a custom control from the RadioButtonList class.
The Render method implementation for a RadioButtonList control initializes a RepeatInfo object for the list, and calls the RenderRepeater method, which in turn uses the RenderItem method to render individual radio button list items.
The following code example demonstrates how to override the Render method in a custom server control so that the RadioButtonList control is always displayed with descriptive text.
<%@ Page Language="VJ#" AutoEventWireup="True" %>
<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet.JSL.Controls" Assembly="Samples.AspNet.JSL" %>
<!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 RadioButtonList - Render - VJ# Example</title>
</head>
<body>
<form id="Form1" method="post" runat="server">
<h3>Custom RadioButtonList - Render - VJ# Example</h3>
<aspSample:CustomRadioButtonListRender
id="Radiobuttonlist1"
runat="server"
RepeatColumns="2"
RepeatDirection="Horizontal">
<asp:ListItem Value="Item1">Item1</asp:ListItem>
<asp:ListItem Value="Item2">Item2</asp:ListItem>
<asp:ListItem Value="Item3">Item3</asp:ListItem>
<asp:ListItem Value="Item4">Item4</asp:ListItem>
</aspSample:CustomRadioButtonListRender>
</form>
</body>
</html>
...
package Samples.AspNet.JSL.Controls;
public class CustomRadioButtonListRender
extends System.Web.UI.WebControls.RadioButtonList
{
protected void Render(System.Web.UI.HtmlTextWriter writer)
{
// Call the base RenderContents method.
super.Render(writer);
// Append some text to the Image.
writer.Write("Experience Windows Server 2003 and "
+ "Visual Studio .NET 2003.");
} //Render
} //CustomRadioButtonListRender
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